Did you marry into a fun-loving family?
Want a silly and sarcastic way to tell an in-law “Happy Birthday?”
Take a look at our 20+ funny birthday wishes for brother-in-laws and sister-in-laws – 100% one-of-a-kind – that are sure to get their attention!
20+ Funny Birthday Wishes for Your Brother-In-Law or Sister-In-Law
Memes and Quotes
1. Happy birthday! Of all the mistakes my sibling has made, you’re my favorite!
2. I don’t always text my in-laws. But when I do, it’s usually to remind them they’re getting older! Happy birthday!
3. Happy birthday! In-laws are God’s way of letting you know… maybe your family wasn’t as crazy as you thought growing up!
4. Did you remember to invite the mushroom to your birthday party? I hear he’s a “fun-gi!” Happy birthday!
5. Happy birthday! Thanks for always being older than me!
Click Here for 20+ Funny Birthday Wishes for Your Sister!
6. Growing up, I always wanted a brother! After meeting you, I changed my mind! Happy birthday!
7. Happy birthday! I know that our family can be crazy and tough to get along with. Thanks for taking one for the team!
8. Did you know that birthdays are the secret to longevity? The more you have, the longer you live! Happy birthday!
9. Happy birthday! My favorite thing about you? You made me an aunt!
10. I always thought I’d be happier as an only child growing up. After you joined our family, now I’m certain of it! Happy birthday!
Click Here for 20+ Funny Birthday Wishes for Your Brother!
11. Happy birthday! If marriage was like buying a house, in-laws would be the mortgage payments!
12. I’d make a joke about your age, but I’m older than you! Happy birthday!
13. Happy birthday! People mistake us for siblings all the time! I always correct them…
14. We may not be blood siblings, but we sure fight like we are! Happy birthday!
15. Happy birthday! They say that a great family is one of life’s best gifts, so… you’re welcome!
Click Here for 20+ Funny Birthday Wishes for Your Daughter!
16. There are some people I’ll never understand. Like you marrying my brother… My deepest apologies! Happy birthday!
17. Happy birthday to my sister from another mister!
18. Not all of my friends are in-laws, only my best ones! Happy birthday!
19. Happy birthday to my brother from another mother!
20. Happy birthday to one of the only other people that know how difficult it is to live with my sibling!
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