1. A plumbing term - cock flaps are the flanges within the mechanism of a stop cock that stop the flow of water.

2. Flaps for a cock. Not to be confused with Cock Flasps
I'm sorry Mr Jenkins, but your whole Cock Flaps assembly will need replacing.
by Cock Flasp August 21, 2006
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"I saw her naked the other day and her cock flaps were dangling like a large lettuce."
by unclechicken May 3, 2010
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The manner in which a male's penis travels when walking if unrestricted by garmet(s). Only applies to biological men, "transgender" men don't actually have penises, despite the current narrative.
Girl at nude beach: Omg look at they's cock flapping in the wind while them slowly walks towards us! I am so going to suck it off!
Other girl: That's a biological male you dumb slut. And learn propper english you libtard.
by dosel February 14, 2023
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