The process of having sexual intercourse with the vertical canal that results from squeezing together rolls of fat and/or loose skin on an obese woman's back.
My 300lb girlfriend wants to stay a virgin so she lets me give her a Mississippi Fat Back and spooge in her perm.
by murd3rfun July 28, 2010

When I was in Memphis last week I broke me off a piece of Mississippi fat back.
How was it man?
Greasy!
How was it man?
Greasy!
by Bully Schlitzkowski May 16, 2016

by bigman98765434321 November 6, 2020

by Organiz3d Chaos September 6, 2021

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.
by Goofnut May 30, 2024

by CaliSlang June 3, 2022

John: Have you seen the decorations that Carrie put up for the party? There's a lot.
Ben: Yeah, it's all back fat.
Ben: Yeah, it's all back fat.
by PapaSnowMan September 19, 2019
