Top Definition
The action of incomplete sitting upon a toilet in the aftermath of a leg workout. Often painful, this effect can last for 1-3 days. Depending on the severity of the potty flop, the afflicted trainee may get as little as 20 degrees into a knee bend before giving up and bruising their buttocks on the toilet seat.
"Those ass-to-grass squats gave me such bad potty flop! I didn't get halfway down before falling!"
by HorFinatOr February 19, 2010
The act of falling off the toilet (face first) while drunk.
Dude where did you get that shiner?

Man I was drunk as hell last night and passed out on the john and and ended up busting a potty flop on my face!
by Zouse February 23, 2015
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