A perverted game of tag played on Fridays. Object is to try and hit as many people's asses as possible without getting your ass slapped. From the outside it looks like a bunch of people running around and screaming live five year olds.

A term used to reference cannabis/marijuana/weed.

Any given Friday when people choose to run around slapping anyone and everyone's asses. Usually, a male slaps a female's ass, and it's automatically considered okay for no reason other than the boy has proclaimed it "Slapass Friday."

When girls get slapped in the butt by guys. Every Friday it is scheduled. A day when people can slap other people's butts. Girls can slap guys' butts too. Some people do enjoy this day. But it must be very painful for some girls, though.

A day when you can slap people's asses.

in high school where every friday all the guys in the school slap all the girls' asses. pretty much self explanitory.

Slap ass Friday first originated from schools in Washington state, Basically any Friday of the year teens/kids/classmates will roam the hallways slapping any ass they see while saying "Slap ass Friday!" Generally guys will make this as an excuse to slap women's asses. Girls can slap guy's asses too, girls can slap girls asses, guys can slap guys asses. This Friday has been going on for seven years.