The butt mark your butt makes when it's really sweaty after running (Cross Country, Track, etc.) and you sit down on concrete/cement.
Dude, look at those massive ass puddles.
by assmanbill September 02, 2010
Top Definition
The wet mark your butt leaves after sitting on concrete after a running workout. (CC or Track)
After standing after stretching from Cross Country, the team looked with amazement at the ass puddles they had left on the concrete.
by rileyrulez69 September 23, 2010
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