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1.
When a bunch of "popular" girls in high school, stand around in a circle in the middle of the hallway and talk about stupid shit and you walk by and you can just taste the slut in the air as it enters your lungs.
Cool friend 1: Why do those dumb bitches stand around in the hallway and talk about stupid shit?
Cool friend 2: Oh man, that's a fishpit. U-turn bro, we don't wanna walk into that pile of slut.
by FedUpHighSchoolKid April 27, 2011
 
2.
A particularly smelly vagina.
JIM: So how was last night?

SEAN: FISHPIT!!!

JIM: OH MY GOD!!!
by FAPFAPFAPFAP August 18, 2009