Flat ass

A very flat booty. Usally people with one either hate themselves or think that they don't have one.

That girl has such a flat ass!

by Darkshadowstorm March 29, 2019

Flat ass

The best type of ass. Only those with refined tastes will appreciate it.

Dude 1: Do you think this is girl hot?
Dude 2: Nah man her ass is flat
Dude 1: Bruh tf is wrong with you, flat ass is the best

by Mary Mary Quite The Contrarian November 13, 2021

Flat ass

Basically a laptop in your girls pants that makes her seem really white

" your girl got a flat ass."
" sometimes I can hit it doe"

by Arwizzle January 31, 2015

flat ass

Having no ass or junk in the trunk. Suffering from the vitamin deficiency Noassitol. See Glutius Flatosis.

Heather's flat as was the result of Glutious Flatosis.

by DzNutz January 20, 2004

flat ass

Blunt honesty, absolute truth bare of cushioning social niceties

Derives from the impossibility of reassuring a person with insufficiently pleasing buttocks

Q: Do these jeans make my butt look big?
A: Girl, no jeans in the WORLD gonna help THAT flat ass!

by Kindly Wise October 28, 2005

flat ass

A twenty-first century version of the secretarial spread, caused by passing long hours planted in front of a computer. Also related to phone ear.

"I have to get a better job. I've spent the entire day just sitting on my flat ass, staring at that stupid screen."

by Deb1955 October 28, 2005

flat ass

Of or pertaining to geniune truth. That which is true on the basest level.

I flat ass couldn't afford a doctor.

by kcardk October 19, 2005