Fat Boi

Some who is obese in size and is quite frankly fat.
Can be used as someone's name.

Josh is a fat boi.
Fat boi (Josh) come here.

by Kurtishasabigdick July 1, 2019

Fat Boi

One who is the fattest individual among his group of friends or peers. This individual often does not believe he is fat and will accuse others of being more fat then himself. Often has a skinny body but an enormous gut.

Dear God, have you seen 120, that guy is a FAT BOI. His pre-bed beers have really caught up with him. Disgusting.

by Fatso120 August 5, 2019

Fat Boi

Its the definition of a person I met yesterday and I started calling him fat boi Jay

OI FAT BOI, GO GET THE FRAGMENT YOU PIECE OF SHIT

by Myabsi November 17, 2019

Fat Boi

Some who is obese in size and is quite frankly fat.
Can be used as someone's name.

Josh is a fat boi.
Fat boi (Josh) come here.

by Kurtishasabigdick July 1, 2019

Fat Boi

When you walk in on your brother waking off and shitting at the same time.

God dammit I just walked in on Drew pullin a fat boi again!

by XxlilriddimkittyxX January 10, 2019

fat boy

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

fat boy

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 28, 2004