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The attractiveness of a girl as perceived by a guy is increased exponentially by her willingness to have sex with/date said guy.
Eddie: Hey David, how do you feel about Becca?
Davide: Ah, she's kind of gross, man.
(The next day)
Becca: So I've always really sort of liked you, David. I'd like to be more than friends.
David: I feel the same way, Becca.
(The next day)
Eddie: Clearly, the Kulp-Durkin principle applies here.
by afriend22 October 05, 2010
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