National Bully your sibling day

National Bully your sibling (s) day is April 27th have fun with this.

April 27th is national bully your sibling day. You can bully your siblings on this date with no permission needed.

by KassWritesDefinitions February 26, 2023

National fuck your siblings day

Fuck your sibling

"Bro you fucked your sister yesterday?"
"Yeah bro, it was national fuck your siblings day."

by Wgjdyetjcdindk tdj r kg d April 15, 2019

May 15 - Oldest Sibling Day

I do to much shit for these children so we oldest siblings get a holiday too. Shout out to that one tweet for the idea.

Youngest sibling- "Fuck you."
Oldest Sibling- "that's rude, judging its May 15 - Oldest Sibling Day"

by yourbasicbadbitch May 14, 2020

National Slap Your Siblings Day

A day where you get to slap your sibling(s) free of charge.

Active December 5th through 10th

Hey (Sibling) Its National Slap Your Siblings Day.

National Slap Your Siblings Day- A day where you get to slap your sibling(s) free of charge.

by otis wotis December 5, 2021

National Punch your siblings day

On March 19th The best holiday of all...

NATIONAL PUNCH YOUR SIBLINGS DAY!!
You get to punch your siblings all day with getting away with it.

Hey Bro I'ma punch you because its NATIONAL PUNCH YOUR SIBLINGS DAY!!

by qwq qwq qwq October 4, 2020

Scare the crap out of your sibling day

October 31 is hollowenn so get something scarey on and scare the crap out of your sibling

If your an only child do what scares you before bed then go to sleep and it will be november 1st

GUY .Hey whats october 31

Other guy. holloween

guy. NOOOOOOOOOOOOOO ITS SCARE THE CRAP OUT OF YOUR SIBLING DAY ahhahahhahahahahha

by NOT AN ONLY CHILD October 31, 2019

January 15; National Bite a Sibling Day

go bite that sibling!

hey sibling *CHOMP*
ow that hurt!
hah it’s January 15; National Bite a Sibling Day

by i’m the koolest of them all January 15, 2021