A very flat booty. Usally people with one either hate themselves or think that they don't have one.
by Darkshadowstorm March 29, 2019
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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
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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
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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 23, 2005
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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 23, 2005
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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 15, 2005
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Also known as Jeong Yoon oh or Jung Jaehyun. Someone needs to give him cake cause everyone knows that he doesn't have one. Jaehyun is the king of all Flat Asses.
Heres how you would use it

Random person : Whats a Flat Ass?

Czennie : A flat ass is someone without cake also known as Jung Jaehyun.
by sochenle April 03, 2021
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