The-effin'-man's definitions
Its a combined definition of fat tire and bicycle. Fat tire is a fat chick that you bang in the belly button. and a bicycle is a slut. So a fat tire bicycle is a slut that is fat and you don't wanna fuck her pussy so you stick it in her bellybutton.
by The-effin'-man January 26, 2010
Get the fat tire bicyclemug.