Top Definition
When an uncircumscised man with a syphilis chancre retracts his foreskin, the entire ulcer flips out all at once because it is too hard to bend. This resembles the movement of a broad-beamed skiff or dory as it is turned upside down.
Good thing I kept the lights on with that guy. I saw that dory flop, so I grabbed my clothes and got the hell outta there.
by Jenni from da' block August 10, 2010

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