Phat Back 

Phat back is a term used to describe a morbidly obese rear end....That's a slight exaggeration.
A phat back is a big-arse bum.

Joleon Jochum: "Damn, Mac, that's one Phat Back,"
Mac: "Thanks, I get it from my gran,"
Joelon: "The one I shagged last week?"
Mac: "Nooooo, the one with 1 boob - right in the middle."
Joleon: "Hahaha, one boob?"
Mac:"...She had breast cancer."

Phat Back by Louie Bowen hater123 November 21, 2020

phat back 

A fat bum

Ngl you have a phat back

phat back by DJkimble May 26, 2018

Phat Back 

A Phat Back is a morbidly obese rear end...That's a slight exaggeration.
A person with a big-arse-bootay.

Freddie: "Hey, Mac, You have a Phat Back!"
Mac: "Oh thanks, I got it from my Gran!"
Freddie: "The one who pegged me last night?"
Mac: "Noooo, my gran's the one with one boob - right in the middle,"
Freddie: "Hhahahahahahaha,"
Mac:"She had breast cancer."
Freddie: Smirks, "She could use it to peg me."

Phat Back by Louie Bowen hater123 November 21, 2020

back phat 

- referring to booty size

- tasty curvature and volume of booty in relation to one's size,

- a reflection of overall tightness of one's clothing, particularly in the lady hump region

Yo dawg, ma girls back phat be so big and tasty, she be servin' dalishes dishes all night long

back phat by Byron Brydges December 27, 2007

phatback 

roll of fat just above a fat mans penis which hides its true length.

when i pull the phatback i will be balls deep

phatback by georgedust October 19, 2008