Often mistaken for slut
A woman whose vagina lives and thrives, solely, to fuck the male penis. Usually devouring all energy and life force within her subject. Thus, the subjects penis retracts, causing the Vagipyre to find a larger, more staminous, subject. Vagipyres often carry deadly diseases and should be avoided at all costs.
"Top story, Bill Clinton died late last night chained to his bed in Little Rock, he was reportedly last seen leaving a wild party with what some people describe as a 'Vagipyre'. The coroner states that 'he had no chance once she got his pants off.' I've never heard of a Vagipyre that desperate. Now, on to weather..."