A day in a school, usually Middle or High school, where teenagers go around slapping each others butts for the fun of it. Common for a guy to slap a girl's ass, a girl to slap a guy's, or two female friends to slap each other, but is usually taboo for two guys to do so. Normally occurs on Fridays and the message is often passed through a forwarded text.
FWD: Fwd: Friday is Slap-ass day! forward to all members of *name random high or middle school* in your contact list!
by Tobilollipop September 7, 2009
by your local baddie October 2, 2019
by BhadBhaby August 29, 2018
On April 12 every year is national Slap ass day. Take advantage this is the only day of the year you can slap a ass, single or taken today is your day
by National Dayz April 12, 2019
by GOD V9 January 13, 2020
by hisijwjdhdhnehw September 23, 2019
slap ass day is on september 24th
by jonny jonny papa September 23, 2019