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A spell cast by an attractive female on a male or group of males. As she walks into the room, the spell is cast and all males who make eye contact with the woman receive instant erections.
Side Note: The spell can be cast without the attractive female's knowing but by simply dressing provocatively.
Ex: As the gorgeous model walked into the room, erecto patronum was cast and all of the male photographers received boners visibly seen protruding through their pants.
by BHBandit December 01, 2013
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