21+ Best Funny Birthday Wishes for Sister in Law (2023)

Looking for funny birthday wishes for sister in law? I am glad that you have found this article.

In this article, I have written for you some of the best funny birthday wishes for sister in law that you can send to her.

Read: Religious Birthday Wishes for Sister in Law

Funny Birthday Wishes for Sister in Law

Thank God I married your brother, otherwise, you would take my whole inheritance. And I like this car!

Happy birthday to the best sister-in-law ever! The only one nicer than you is Santa Claus and he doesn’t even really exist.

To the most amazing sister-in-law in the world, thank you for always being there for me and giving me a great excuse to drink on a Monday night. I love your corny jokes and may this birthday be full of joy and laughter just like every other day.

Happy Birthday to my favorite sister-in-law who is now turning one year older than me! Don’t worry, next year I will be the same age.

Funny Happy Birthday Wishes for Sister in Law

Do you know that only your body is growing old and not the brain? Because you don’t have it. Happy birthday!

Happy birthday, sister-in-law! May this year your spending on anti-aging stuff surpass the spending on your food.

Finally, you have reached the age where you should be careful with eating sweats. I don’t want to see you with Insulin. Happy birthday!

I will be the best aunt in the world if you promise to name your firstborn after me. Happy birthday, sis-in-law!

Happy birthday to the greatest headache of our family. May you keep celebrating your birthdays. Wish you all the best today and always.

May this birthday and every other day be full of all the funny jokes you tell me. Your sense of humor is infectious and I enjoy having a few laughs each day with you.

I wanted to get you all of the latest accessories so that everyone can tell that we are sisters, but then I remembered how much you love to just be yourself and I am glad that I didn’t waste my money!

We always fight when we are together, but that’s fine because your birthday is coming up and I’d rather not be kicked out of the house again. Happy birthday to my hot-headed sis-in-law!

On your birthday, I wish that you become younger with fewer wrinkles every passing year. Happy birthday, sister-in-law!

I can’t believe my sweet sister-in-law is already older than the oldest guy on this planet. Happy Birthday, Anyway!

Watching you do silly things is one of my favorite things. Even if you are a year older don’t stop being dumb. Happy birthday!

Dear sister-in-law, I have learned from you so many things and one of them is how to keep yourself stupidly happy. Wishing you all the best on your birthday!

I hope after reading this article you have found some of the best funny birthday wishes for sister in law that you can send to her.

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