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.
by The Yucky One March 6, 2013
Get the YBF mug.
You'll be fine
J-Biebs was getting hostile... All I had to say was YBF.
by amo15252 May 9, 2011
Get the YBF mug.