flat squad 

a group of girls who have no ass or boobs and are considered flat.

Here comes jane, sally, and lisa the flat squad.

flat squad by jamal February 14, 2005

Flat Stanley 

When an obese woman lies on top of a skinny man during sex. This results in a flattening of the man, slowly crushing his bones and compressing his organs. The man is then sent around the country in an envelope. Old people and retards take pictures with him at national landmarks.

When Sue and Fred have sex they do the Flat Stanley. Fred usually ends up in the hospital to have his lungs refilled. He's been told he only has a month to live.

Flat Stanley by ghett0d3ana May 7, 2010

Flat Stanley 

1) A Boner
2) A children's Book from the '60's from which the term got it's name.

*Note that the term can be used two ways, to refer to a boner, or to address one.
1) I was sitting in math and got a major flat stanley.
2) Hi flat stanley, do you wanna come out and play?

Flat Stanley by CJ McMastaKewlio February 10, 2009

lie-flat seat 

An airline seat that offers a recline of at or near 180 degrees, but the angle of the seat is not parallel to the floor, rather a slant towards the floor. These seats are offered by many airlines' long-haul Business Class flights.

Singapore Airlines has defined the standards of a lie-flat seat.

lie-flat seat by tripper December 6, 2004

Flat squared 

When a girl has a "flat" chest and butt.

Also written as flat^2

"Bro is that a dude?"
"Nah she's just flat squared"

Flat squared by Clean up Kenny June 4, 2016

flat squirrel 

One who is indecisive.

Come on, dude! Don't be a flat squirrel.

flat squirrel by Abbieiscool November 24, 2016

Flat Slut

A flat slut is somebody named Amy who has been in a terrible sexual accident and had their face smashed against a woman's extremely flat breasts. This caused her face to become as flat as a piece of paper. If you ever meet a Flat Slut, don't get too close because she will reel you in and turn you into a condescending dick who gets really annoyed when their threesome with Amy doesn't go to plan because Geraldine doesn't know how to use a vaginal condom.

Guy 1: "Ugh, I met this flat slut at college today."
Guy 2: "Ew, was she flat?"
Guy 1: "Oh yeah, flat as a rat"

Flat Slut by PshycoComedian November 22, 2017