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
Taken or not be prepared to get your ass slapped or grabbed all Month of October!!👻
“Yo I jus grabbed jasmines ass it’s national slap ass day
by your local baddie October 2, 2019
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
Slap ass day is a different version of the last slap ass week but it’s only for a day
Boy”grabs ass”
Boy”It’s slap ass day
by GOD V9 January 13, 2020