The gooey liquid that is produced when bits off poop escape from your anal cavity and mixe with the persperation in between your ass cheeks producing a slimy subtance that stains your underwear.
Adam was secretly fed several ex-lax's and a little bit of poop exited his anus and mixed with his sweat after playing basketball which stained his boxers and made him smell, therefore making him a loser.
by Bert, Dirty Sanchez, and Billith Wagith June 6, 2003
by Juan E. Ramos aka decoy June 28, 2007