Front Skids

The mark left by a penis, when extracted from an anus and placed back into underwear. Brown/Dark green fecal matter inside the front of a man’s underwear. Usually 2' inches in length with a potent smell.

After me and Marilyn made love i came across a suspicious mark in the front of my underwear I came to the conclusion it was front skids.

front wheel skid

cockney rhyming slang, front wheel skid, yid, jew.

look at that front wheel skid just fell under that bus.