The odorous sweat and dead skin enduced slime accumulated on one's scrotum in the form of a thick buttery emulsion. It has similar qualities as the slime on a snail's underside. It can be argued to be a close relative to Duck Butter, or even in some cases be the same congealed matter. Smells are comparable to yeasty dough.
After not bathing for a few days on our summer camping trip, we decided to graze our scrotums on a sleeping camper's forehead creating multiple snail trails from our accumulated bean cheese.