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When ones labia becomes loose and flappy. Also, when a man is extremely poor at performing in any athletic activity. Examples of which are awkward running, basketball skills, and most notably tennis.
"Wow, Jim really sucks at tennis!"
"Well Johnny, thats probably because he has a flabby labia."
"Oh, that makes much more sense, no wonder he sucks at tennis."
by Kbad ILLgauskus April 30, 2008
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