When someone fills there butt-hole with air and then someone slaps it and they let out a little poop.
Dan: what happened to you lastnight?
Jake: oh my god dude, Jane wanted to try this new thing called woppie slap. i didnt know what it was till it was already done.
Dan: I have heard about woopie slaps, thats disgusting dude.
a female that is busted from head to toe or non approachable.
We went to the club the other night and there were nuttin but SLOPPY WOPPIES in that bytch!