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20 Sister Jokes That Are Relatively Hilarious!

Whether you have a sister or not, you'll love these side-splitting sister jokes!

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Beano Jokes Team
Last Updated:  July 3rd 2023

Do you have siblings? Doesn't matter if you don't - you're bound to find these sister jokes absolutely hilarious! Tell these to your sis, or to your friends with sisters for a laugh! Then check out some of our other jokes - have a laugh about wood, enjoy some not rubbish bin jokes, and try some pigeon jokes that will have you cooing with laughter!

Twin sisters had a birthday! One turned twenty…

The other turned 22!

Why doesn’t anyone know anything about Napoleon’s sister?

Because they were Bornapart!

I ran into my sister while I was exploring the Sahara desert...

I yelled, "Oasis!"

How do you tell two half-sisters apart?

The difference is a-parent!

I had a big fight with my sister. My friends said “That must cause some problems!”

I said, “It’s relative!”

I saw a witch riding a vacuum cleaner! I asked, “Why are you on that?”

She said, “My sister has the broom!”

Do you think your sister is annoying?

It could be worse… She could be twins!

Big brother: That planet in the sky is Mars.

Little sister: Then that other one must be Pa’s!

What do you call Darth Vader’s sister who works in a hotel?

Ella Vader!

Did you know Cardi B has a sister who’s a personal trainer?

Her name is Cardi O!

My sister wanted to marry a postman…

My parents wouldn’t letter!

My mum’s sister likes to take the law into her own hands…

She’s a real vigil-auntie!

What did Luke Skywalker say when he saw someone bullying his sister?

“You’d better not Leia hand on her!”

Why don’t robots have brothers?

They all have transistors!

My sister just hates it when I invade her privacy…

It says so right here in her diary!

What did the cell say when his sister stepped on his toe?

"Mitosis!"

I made my mother’s French sister angry…

Now she's a cross aunt!

What do you call a helpful sister?

Assister!

What do you say to your sister when she’s crying?

“Are you in a crisis?”

I always get the stairs, but my sister gets the lift…

I guess we were raised differently!