Flat-A 

It's a word to describe an A student who is a smartass who is arrogant and thinks he's smarter than AlbertEinstein and thinks his IQ is 3.141592653589793238462643383279502884197169399375105820974944592307816406286 quintillion.

Guy: What did you get on the AA2 test with MANDEEP Kumar you Nasal Passage
Tareq: A Flat-A
Guy: Go kill yourself you aeronautical Nasal engineer

Flat-A by Nasal Passage February 5, 2018

Flat-A 

It's the word when you're a smart ass and you're just such a big piece of shit that you're just a fricken Albert Einstein Mofo.

It's not an A- or an A+ it's just a nice flat and juicy A

Dis dumbass mofo: Yo what'd u got on the test u nasal passage
Dis Smart ass mofo: Haha I got a Flat-A
Dis dumbass mofo: Wow, ur such a nasal passage.
Dis Smart ass mofo: Haha, at least I'm not a refurbished Amarjeet Fifa support.

Flat-A by JuicyFatPigletSlayer February 5, 2018

flat as a witch's tit 

Flat taste-less beer or lager

Ugh, is this the best beer you have? its as flat as a witch's tit

flat as a witch's tit by Justine Lowndes September 20, 2006

Flat as a rock 

This mean "on the downlow"

Yaro: Hey are you gay?
Lucas: Yeah but it is "flat as a rock"

Flat as a rock by Scurvy McCheese May 27, 2011

flat as a board 

adjective describing a woman with no breasts, that is, flat-chested

"She was a carpenter's dream; flat as a board, and easy to nail."

flat as a board by Jake March 6, 2004

flat as a pancake 

When a girl has no tits whatsoever and her chest is as flat, or flatter than a pancake. Or having just nipples and no lumps.

Jenny stuffs her bra because she's as flat as a pancake. Even though she doesn't need a bra.

flat as a pancake by The Reagonator February 5, 2009

Flat as a plank 

When you pretty much don't have boobs.

Why do people draw that girl with large boobs when shes flat as a plank?!?!

Flat as a plank by Enigmatic person April 11, 2019