Top definition
usually a friend and another friend (both female) that hooked up with the same guy.
but at different times.
girl you hooked up with him too!?
SPIT SISTERS!!!!!
by Shit mahh pants January 10, 2012
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2
Two girls that have sucked off the same guy in the same night
Guy1: did you hear about Sally and Jen?

Guy2: Yeah they became spit sisters when they sucked off jimmy
by Awisko February 15, 2015
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