Top Definition
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.
by Lotussss January 10, 2011

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