2 definitions by iwoveyou

Stands for "but it's so fun", often used when being scolded for erratic or annoying behavior. pronounced : biss-if
Mom: Sally, stop licking the rug.

Sally: BISF!
by iwoveyou January 18, 2011
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1. One who likes to give fellatio.

2. Plays hard to get but is a total slut.

3. An unemployed girl who has sex for expensive bags.
Tom: That girl is so easy.

Adam: I know, I was with her the night before, she's a Devyn.

Tom: At least, I didn't have to spend money on her, like you.

Adam: Well, she's like a whore.
by iwoveyou February 28, 2012
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