by YourBoyTW April 8, 2017

by X8x8x8x8x8xskwkc May 30, 2018

by Yoboycam May 22, 2018

Person 1: hey you know what day it is?
Person 2: its December 13 why?
Person 1: its national slap your crushes ass day.
Person 2: oh ok (slaps ass)
Person 2: its December 13 why?
Person 1: its national slap your crushes ass day.
Person 2: oh ok (slaps ass)
by Oakpaw December 7, 2019

The definition of National Slap your Friend’s Ass Day is basically don’t pussy out and SMACK DAT BOOTY
by Jax1995 June 27, 2019

Me: *slaps crushes ass*
Crush: “why did you do that?”
Me: “I had to it’s December 5th national slap ur crushes ass day”
Crush: “why did you do that?”
Me: “I had to it’s December 5th national slap ur crushes ass day”
by Imcoolright December 6, 2019

This is the day when you get to playfully slap the ass of your bestfriend of the opposite gender. That's where the his/her part comes from
by Jake Wall April 11, 2017
