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.