After sex, when the man's penis is becoming flaccid, the woman leaps onto it and bends it painfully, making the penis act as a piece of soft, washed-up driftwood. Accordingly, the penis at half-mast is referred to as "flotsam."
by Cory Massaro September 24, 2007

"My mom found out that I had been having sex because she could see my flotsam bulge through my pants."
by Cory Massaro September 24, 2007
