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CTFB means come the fuck back. It is the opposite of GTFO (get the fuck out)
:poppy has quit the chat:
vorpalsword says: CTFB
by vorpalsword June 23, 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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