Fat back 

When you hit somebody’s back with your hand cupped and it make a loud ass noice

*hit back* **smackin sound** damnnnn juicy back(fat back) ass

Fat back by Fatbackass May 12, 2019

fat back 

our friend matt is a fat back

wow what a fat back

fat back by loure October 17, 2008

Fat Back 

A person with a giant back, but an incredibly small penis. To make up for insecurities resulting from a case of babydick, a fat back will overcompensate and take advantage of any oppurtunity to brag about his or her hugeness, back or otherwise.

When everyone started talking about their penises, Mike the Fat Back quickly changed the conversation: "I'm the only one who can get this tattoo 'cause my back's so big"

Fat Back by xchgsjhkd November 27, 2010

Fat back 

Some one who has a fat ass back.

I called one of my friends a fat back because they have a fat ass back!

Fat back by Gay legs May 25, 2018

fat back 

A pre-flatscreen era TV, tube TV.

Damn bro the 90’s called… they want their fat back back. Get yourself a new TV already!

fat back by CaliSlang June 3, 2022

Fat Back 

An extremely fat person.

Look at that huge fuckn’ fat back. Prolly ain’t seen his dick since grade school. He’s gotta weigh 500 pounds.

Fat Back by Goofnut May 30, 2024

Fat Back Truck 

Another name for an extra-wide pickup truck with dual rear tires.

"Why do Alex and all his friends drive fat back trucks?"

"Your mom drives a fat back and she has a greasy mullet."

Fat Back Truck by Tim Jerome February 19, 2008