Top Definition
The irrational fear (phobia) of an underlying penis shape in the crotch region of clothing. This can be a fear of the actual outline, or the fear that a bunch of the fabric may be in fact indicative of actual real turgid manflesh. It is a perceptual fear, and while there is no causality link between cock bumps and the fear; it is most likely associated between someone's fear of intimate contact in collusion with their hypersensitivity of other's sex organs. They may fear a sexual encounter is imminent if the impression of the penis is visible.
Closeted homosexuals often exhibit medectophobia when witnessing a man in a bikini or bike shorts.
by Gacy the Rape Clown September 30, 2011

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