To sleep, rest laying down horizontally
I went home last night and totally went straight Phlat.

I totally got Phlat last night after the party.
by VanIsleStoner February 4, 2021
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When a girl has a big ass, but it's one of those flat, pancake asses with no shape.

Phat + Flat = Phlat
"Damn...look at that big girl's ass over there!"

"Naw man, check it from the side. That ass is PHLAT."
by DB DeeBee July 25, 2023
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This word is used to describe a gyal who has absolutly no arse at all, there arse is as flat as a pancake, it might as well not be called their arse its so flat
Oi mate, that gyal is phlat
Ur phlat as a pancake
Bro you aint fit with that phlat ass
by Phycz February 18, 2023
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It's when you're between thicc af and thin as a pancake
Jimbo: Man, you're mom is E X T R A T H I C C ! ! !
Timbo:.......wtf is wrong with you.........
...... she's pretty phlat tho not gonna lie,🅱️.
by SexualofPans64 January 10, 2020
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