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When two people are classified as family members on Facebook, but are known to hook up occasionally.
They always hook up but they're"brother and sister" on fb! Talk about FBIncest.
by sydlesk March 07, 2010
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Sep 8 Word of the Day
A casual invitation / threat used by an individual that is not afraid of fucking someone up.
PAUL: I'm going to beat your ass.

JACK: Fuck around and find out, fool!
by NX STARCHILD October 16, 2020
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