A softail-style cruiser motorcycle produced by Harley-Davidson
In Harley-Davidson motorcycles, the softail frame is designed to look like the hardtail bikes of the past, while still offering the comfort of rear suspension. The shock absorbers are positioned along the axis of the motorcycle, tucked away under the transmission. There are several Harley-Davidson models with the Softail frame, including the Softail Standard, Custom, Springer Softail, Heritage Softail, Heritage Springer, Night Train, Deluxe, Deuce, Fat Boy, the Dark Custom Cross Bones, and the Dark Custom Blackline.
by hharam January 5, 2015
Someone who just eats constantly everyday and never excersises or does shit about it
Brian, Milton, and Andy are fat boys but PABLO IS ONE FAT BITCH!!!
by Jeff June 29, 2004
a spliff with only tobacco at the beginning, the rest being purely marijuana.
Hey Einstein, how's the fat boy comin?
by AdventrureCrew June 3, 2010
A big ginormous boy with man titis.Also a person who refers to them self as chubby, big bone, fluffy.With a funny name usually named after a charicter off south park
person 1:hey i want some of that pizza
person 2:No fat boy
person 1:im not fat im just big bones
person 2:No ur a fat ass now sit down n shut the fuck up
person 1:Fine i wanted donuts anyway

by Mz.Pooh.Babii October 20, 2007
someone who eats constantly and can't get off their obese ass to get a job.
hey fat boy, yea you, sal, get the fuck up and get a job and stop eating so much then maybe you can get some chicks
by lonw August 26, 2007
A fat, or well-stuffed, joint
Roll me a fat boy, my good man!
by R-2 D-Tox November 8, 2005
A term used instead of 'fuck buddy' to help the conversation sound more innocent.
ellen: sally, will you be my fat boy?
sally: sure.
by berry :-) December 30, 2006