is a woman that is either so annoying or physically unattractive she would not only never give you an erection, she steals future erections at a later unspecified times just by existing.
Guy 1.)"Damn, that chick is so annoying just knowing her makes me think ill never get it up again."

Guy 2.) "Yeah, I know bro.. she is a total erection vampire."

"I am sorry baby, this never happens, must have been that erection vampire cause I am pushin' rope."
by Humptruck October 17, 2013
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