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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."
"My girlfriend was pissed that I had come too early, so she gave me a massive flotsam jumper."
by Cory Massaro September 11, 2007
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