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Yucky Boy Fitness, a fitness program that promotes flexible dieting and encourages reaching a fitness level beyond conventional attractiveness.
He's ripped to the point girls don't even think it's sexy anymore. He must be on that YBF program.
YBF by The Yucky One March 6, 2013
Related Words
YBF YBFADM YBFDi ybffle ybfnoqz ybfr
You'll be fine
J-Biebs was getting hostile... All I had to say was YBF.
YBF by amo15252 June 2, 2011
Often used on social media captions when flexing.

“YBF CAR” “ I’m YBF”

Originates from “YB” as in “I’m on the way to YB house”
YBF by Santiago Dunnbar January 14, 2026
derived from YBDI meaning - You Better Fuckin' Do it! Praise when someone really turned your party, with a comment or an action.
She read her fiercely for getting that trashed in the club. I was like YBFDI girl!
YBFDi by circuitboy December 18, 2012
Much love. YBFADM
YBFADM by travelvice December 27, 2009
hey jennifer.
whats up? nothing much here.
just hanging out...well i gotta go
but i'll talk to you later.
love ya!
ybffle.
natalie
ybffle by chelsah22 April 21, 2007