100+ Funny Birthday Wishes & Quotes for Your Brother-in-Law

Sending your brother-in-law a funny birthday message is one of the best ways to say you’re glad he’s in the family. In this article, we’re providing the ultimate list of silly birthday wishes, quotes, and one-liners to share your love and support, plus deepen your relationship with him. We’ve also sprinkled in helpful tips on how to make your message even more personal, whether you write it on a card, send it through text, or say it in person.

The Funniest Birthday Wishes for a Brother-in-Law

Happy birthday to my favorite honorary relative!
Cheers to the only guy who can put up with my sibling.
HBD to the biggest suck-up I know… my brother-in-law!
You’re aging like fine wine… expensive and hard to find!
Older? Definitely. Wiser? Not so much. Happy birthday, old man.
Happy birthday to the proof that my sibling has great taste in men!
Best birthday wishes to my favorite in-law (but don’t tell the others).

Section 1 of 8:

Short & Funny Birthday Wishes

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Drop a short and silly message to shower him with birthday love. Sending a simple birthday message is one of the best ways to spread love and let your brother-in-law know you’re thinking about him. Here are some funny options to lighten the mood and get the party started:
- Happy beerth-day, bro!
- Happy one year closer to retirement, brotha!
- Happy birthday to my favorite honorary relative!
- Best birthday wishes to my favorite senior citizen.
- Cheers to the only guy who can put up with my sibling!
- HBD to the biggest suck-up I know… my brother-in-law!
- You’re aging like fine wine… expensive and hard to find!
- Older? Definitely. Wiser? Not so much. Happy birthday, old man!
- Happy birthday to the proof that my sibling has great taste in men!
- Best birthday wishes to my favorite in-law (but don’t tell the others).
- Happy birthday. Remember, it’s better to be over the hill than under it!
- HBD! I’m glad my sibling chose to marry you. I’m not sure I would have!
- You’re the best thing that’s happened to the family since… well, me. HBD!
- Cheers to the guy who understands what I go through at family gatherings!

Section 2 of 8:

Warm & Witty Birthday Wishes

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Spread birthday joy and excitement with a witty quip or joke. Trying to make your brother-in-law laugh out loud? Throw out a playful joke about marrying into your family or having to deal with your sibling. Humor is a great way to connect with him and strengthen your relationship!
- Happy birthday to my amazing brother-in-law! It feels so great to finally have a sensible sibling.
- Cheers to another year of not being able to find a way out of the family! Happy birthday, brother.
- I smile because you’re my brother-in-law… and laugh because there’s nothing you can do about it!
- Happy birthday to the comedian who never quits. May your day be full of cake, laughter, and questionable life choices.
- Happy birthday to the guy who thinks he’s the funniest, coolest, and smartest in the family. Just FYI, we let you think that. You’re welcome.
- Cheers to the man who voluntarily chose to join my crazy family. You deserve a medal for being so kind, patient, and loving toward my sibling.
- Happy birthday to the brother-in-law who makes family events a lot less awkward. You’re a lifesaver, and we’re so blessed to have you in our family!
- Happy birthday to my brother from another mother! Hope you get a much-needed break from my sibling on your big day and get to eat lots of yummy cake!!
- You're not just a brother-in-law; you're a legend. Thank you for always being there, through thick and thin. Happy birthday!^{[1]
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- Happy birthday to the best brother-in-law on the planet! You have my full permission to make my sibling’s life a living hell, but I know you’re a lot nicer than me...
- Wishing the happiest of birthdays to my brother-in-law. You’re brave, courageous, and incredibly crazy to marry my brother. Congrats on surviving another year with him!
- You prefer cats over dogs, listen to punk rock, and can make a mean margarita… you’re everything I ever wanted in a brother-in-law! Hope your birthday is the best one yet!
- Happy birthday to my brother-in-law (and my family’s savior). I’m so grateful that you decided to marry my sibling and make our lives a whole lot easier. We seriously owe you one!
- Happy birthday to my crazy, talented brother-in-law! You’re the only person in the world who understands how difficult it is to live with my sister. I guess that means we’re trauma-bonded for life!
- HBD to the guy who drinks mojitos, sings Kelly Clarkson on road trips, and doesn’t know what an indoor voice is. I still don’t know why my sibling chose you… but I’m grateful. Wishing you the best day ever!
- Growing up, I always wanted a brother. After meeting you, I changed my mind… just kidding! Happy birthday to my favorite in-law and the funniest person I’ve ever met. I’m so happy you’re part of the family!!!

Section 3 of 8:

Snappy & Savage Birthday Wishes

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Crack a joke about the downsides of aging to tease him. If you’re close to your brother-in-law, poke fun at his age, appearance, bad habits, or rank in the family to roast him with love and laughter! Here are some savage options for inspiration:
- Don’t count the years. Count the hairs left on your head!
- Happy birthday, old sport. Cheers to another year… closer to death.
- Happy birthday, you old timer. Don’t hurt yourself blowing out all those candles!
- You might be prehistoric, but at least you’re not extinct. Happy birthday, you fossil!
- It’s time to celebrate the oldest person I know. Happy birthday to an ancient artifact!
- You’ve officially reached the age where your back goes out more than you do. HBD!
- Happy, happy birthday! I kept the receipt for your gift, just in case you didn’t make it!
- Whatever you do, don’t let aging get you down. It might be too difficult to get back up!
- Age is just a number, but in your case, it’s a pretty huge one…Happy birthday, old man!
- I know you don’t like birthdays, but the good news is that you don’t have many more left!
- If anyone calls you old this year, don’t stress…Just throw your cane and dentures at them!
- Happy birthday, bro! You’ve reached the point where it’s probably best to start lying about your age.
- Happy birthday to my very, very, very, old brother-in-law. Don’t forget to iron out the wrinkles in your birthday suit!
- It’s amazing to be young, energized, and full of life. Do you remember what that feels like? Happy birthday, old timer!
- I’m a firm believer that you can be anything you want. In your case, that’s anything but young. Sorry, old man, you missed the train for that one!

Section 4 of 8:

Funny Birthday Quotes for a Brother-in-Law

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Share a famous birthday quote to get the laughs going. If you’re struggling to find the right joke or message, get help from someone else! The following quotes are sure to put a smile on your brother-in-law’s face and brighten his day:
- “What strange creatures brothers are!” — Jane Austen
- “The older I get, the better I used to be.” — Leo Trevino
- “Nice to be here? At my age, it’s nice to be anywhere.” — George Burns
- “Old age is always fifteen years older than I am.” — Oliver Wendell Holmes
- “The older you get, the better you get. Unless you are a banana.” — Betty White
- “You know you’re getting old when the candles cost more than the cake.” — Bob Hope
- “I don’t feel old. I don’t feel anything until noon. Then it’s time for my nap.” — Bob Hope
- "You know you’ve aged when you read events you lived in a history book." ― Will Ferrell
- “Just remember, once you’re over the hill you begin to pick up speed.” — Charles Schultz
- “The secret of staying young is to live honestly, eat slowly, and lie about your age.” ― Lucille Ball
- “I was brought up to respect my elders, so now I don’t have to respect anybody.” — George Burns
- “Inside every older person is a younger person—wondering what the hell happened.” — Terry Pratchett
- “Growing old is like being increasingly penalized for a crime you have not committed.” — Anthony Powell
- “Eventually you reach a point when you stop lying about your age and start bragging about it.” — Will Rogers
- “You’ve heard of the three ages of man: Youth, middle age, and you’re looking wonderful.” — Cardinal Spellman
- “Middle age is when you’re sitting at home on a Saturday night and the telephone rings and you hope it isn’t for you.” — Ogden Nash
- “As you get older three things happen. The first is your memory goes, and I can’t remember the other two.” — Sir Norman Wisdom
- “You know you’re getting old when you stoop to tie your shoelaces and wonder what else you could do while you’re down there.” — George Burns

Section 5 of 8:

Funny Birthday Wishes From a Sister-in-Law

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Remind him that he has the best sister-in-law in the world. There’s nothing quite like the bond between a brother and a sister, even if you’re not related by blood. Let your brother-in-law know you appreciate him and that he’s lucky to have you in his life. Here are some funny wishes to show love:
- Happy birthday, bro. Love, your far superior sister-in-law.
- Happy birthday to the guy who has the world’s greatest sister-in-law!
- Bro, you won at life… Having me as your sister-in-law is the ultimate flex. Happy birthday!
- Thanks for being the brother-in-law I can always count on… to finish off the pizza, cake, or beer. Love ya!
- Happy birthday to my incredible brother-in-law. I hope you get all the beer, cake, and COD binging you desire!
- There’s no easy way to say this, but you’re getting old. Thankfully, you’re aging like a fine wine. Happy birthday!
- I hope your birthday is filled with all the things you love… and none of the chores your spouse wants you to do. HBD!
- Happy birthday to the guy who can find humor in any situation, even a family gathering. May your special day be as funny as your jokes (and just as long).
- So, how does it feel to be one year closer to retirement? Don’t worry, it happens to the best of us. Happy birthday to my aging but still amazing brother-in-law!
- Happy birthday to the most amazing brother-in-law a girl could ask for! Your unwavering support and infectious laughter have always brightened my days.^{[2]
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- Happy 147th birthday in dog years! Sending you all the hugs and stress-relief balls in the world (because let’s face it, you’re going to need them being married to my sister)!
- I was trying to think of the perfect birthday present… but then I realized you already have it: having me as your sister-in-law! Let me know if there’s anything else that can top that (even though I highly doubt it!).
- Before I knew you, I never had a brother. And now that I have you as a brother-in-law, I’m pretty sure I don't want another one... because nobody else could be as cool as you are, obviously! Happy birthday!

Section 6 of 8:

Funny Birthday Wishes From a Brother-in-Law

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Put your brother-in-law in his place with a warm and witty birthday message. Use any of the following wishes to express affection and remind him that you’re the funnier, smarter, and better-looking man in the family. Just make sure you’re close enough so you don’t accidentally offend him or strike a nerve!
- From one handsome brother to, well, a brother… Happy birthday!
- Enjoy your special day. Beers are on me the next time we’re together!
- Smart, handsome, and intelligent… but enough about me. Happy birthday to you!
- A handsome, charming, and talented man… is wishing their brother-in-law a very happy birthday! Cheers to you!
- We may not have been raised together, but we’ve perfected the art of day drinking together. Happy birthday, broski!
- A huge round of applause to the guy who knows what it’s like to live with my sister! Hope you have a relaxing birthday, brother!!
- Happy birthday to someone who has the best brother-in-law in the entire world. Seriously, you don’t know how lucky you are!
- We may not have a lot in common, but we both know that our spouses are the best… and sometimes the worst. Happy birthday, dude!
- Happy birthday to my brotha from another mother! I wanted to come up with a funny joke, but then I remembered you’re married to my sister.
- Bro, you’re the strongest person I know… because you have to deal with my sister every day. Wishing you lots of love, laughter, and happiness this upcoming year!
- You’re God’s strongest soldier… because you have to deal with my sister every day. Sending you lots of healing and peaceful vibes this year—you’re gonna need it, bro!
- Unfortunately, it’s too late to run away from my family… but fortunately, we love you more than you can imagine! Thank you for treating my sister so well and being the husband she deserves—you’re the GOAT!

Section 7 of 8:

Funny Belated Birthday Wishes

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Send him a belated birthday wish if you missed the big day. Even if your message didn’t arrive in time, shoot your brother-in-law a late birthday text to let him know you’re thinking of him. You can always incorporate some humor to lighten the mood, like telling him your message got stuck in traffic or that you’re extending his birthday celebrations!
- Yes, I forgot your birthday. But on the bright side, I forgot your age, too!
- Sorry, I wasn’t there to mourn the loss of your youth. Stay sharp, old man!
- I’m sorry for the belated birthday wishes. I just didn’t think you’d live this long…
- Sorry for the delay in birthday wishes. Let’s blame it on Mercury being in retrograde!
- I might have missed your birthday, but at least I didn’t forget that I forgot. Cheers to you!
- Better late than never, right? Wishing you a belated happy birthday that’s as exciting and amazing as you are!
- Happy belated birthday to someone who deserves to be celebrated every day… just not on their actual birthday!
- I didn’t forget your birthday… I just wanted to make it last longer. Happy belated birthday, my amazing brother-in-law!
- Don’t think of this as a late card. Think of it as giving you a few extra days to stay a year younger. Happy birthday, my dear brother-in-law!
- I know you had lots of birthday wishes yesterday, but who is thinking of you today? Me, that’s who. Happy belated birthday, brother-in-law!
- I know this message is a little late, but good things come to those who wait. Happy birthday, bro! I hope you get everything you wish for and more.
- I couldn’t decide what to get for your birthday, so I landed on giving you the gift of suspense. Happy belated birthday to the most patient person I know!
- Hoping this minor speed bump in our relationship is overlooked, but know that the wishes I sent to you got stuck in traffic. I love you dearly, and I’m sorry for the delay.
- Life is all about forgiving and forgetting. I forgot about your birthday… so you can forgive me? Works for me! But seriously, I’m so sorry about skipping your birthday, man. I hope you had the best day, and I promise I will make it up to you!

Section 8 of 8:

How to Send Birthday GIFs & Images

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Look on websites like GIPHY or Tenor for birthday GIFs and images. If you want to send someone a GIF or image along with your birthday wish, you can browse sites like GIPHY.com, Tenor.com, Gifer.com, or Funimada.com. Just type in “happy birthday brother-in-law” or “funny birthday wishes for a brother-in-law” into the search bar at the top of the page and scroll away!
- To add a GIF to Outlook or Gmail, compose a new email, click the “Insert Photo” icon, and drag and drop the GIF from your desktop to the body of the email.