Fratback

A fraternity member fresh from south of the border.

Jose shut up you fratback!

by Jizon773 March 29, 2015

Flatpack

A pack of cigarettes that have been flattened by a person who has carried them around all day in a back pocket, also known as a flatpacker.

Man, i was gonna smoke a cigarette but i got a flatpack!

by Angie Says So June 8, 2015

Fatback

When you slap your stomach so hard your back jiggles

Dude you see that fatback hit the water.

by Craigitron March 17, 2017

FlatRack

The meaning of a female who has little to no measurments for their breasts

That girl is a flatRack! she has no titties!!

by Kirito247 October 17, 2018

Flatrack

A definition of a girl with little to no size in the breasts

She is a Flatrack! No titties!

by Kirito247 October 17, 2018

Fatbacks

The three racers in Mario Kart 64; DK, Wario, and Bowser, that are scary to get around or hard to pass. If a smaller racer runs into the fantasses, they spin out. So called because of their wide backs.

Frickin’ Fatbacks, I just ran into DK on the bridge and fell in the lava.

by anonymous July 17, 2020

flatjack

Same as a HillJack but they live in flatlands. They’re rednecks who live in cities and rural flat areas.

He’s not a true hillbilly or even a HillJack. He’s a hillBilly wannabe, he’s a FlatJack.,

by BaiCon September 7, 2021