flatter than your momma's chest 

An insult used to describe how flat something is.

From the movie Smokey and the Bandit Part 3
(Examining the flat tire on their car)
Junior: It's flat Daddy.
Buford T Justice: Flatter than your momma's chest.

flatter than your momma's chest by Turkey Dump April 12, 2016

Flatter than a witch's tit

Adjective. Extremely flat. A witch is traditionally considered not to be the model of fertility and, as such to be less than buxom.

Norfolk is a very windy county but that is not surprising -it is flatter than a witch's tit.
I turned the key but, having left the radio on all night the battery was as flat as a witch's tit.

Flatter than a witch's tit by McCririck's unlucky Laundress October 2, 2005

flatter than hammered shit 

Can't get any worse.

I've fucked my life up flatter than hammered shit.

flatter than hammered shit by smedley pond June 14, 2010

flatter patty 

When the diameter of one’s penis supersedes the length, by at least one inch.

My boyfriend and I were about to have sex, then I saw he had a flatter patty.

flatter patty by Mike Scott, regional manager September 21, 2019

Flatter Fest 

To complement someone multiple times over a short period of time.

Alice: "I love your boots, Kate. And those tights."
Sally: "And your green coat is very cute!"
Kate: "Wow, this is such a flatter fest."

Flatter Fest by casp82 January 27, 2009

flatter myself 

1.) when someone gives you a compliment and you have no idea how to react. when this happens close your eyes and laugh out loud to yourself enjoying the moment.

2.) when you tell a joke that no one else found to be funny, or no one else heard at all and you proceed to laugh to yourself.

3.) A smugness

Sebastian: "damn Randy that sure is a nice beard you got going there."

Randy (inner monolouge): "I never really thought it looked that good, but alright ill flatter myself...haha, hahah, hahahahaha!

flatter myself by The Macho King May 23, 2012

flatter-blatter 

the sound that comes out when your talking and you forget what your saying in the middle of a sentance.
so people know to forget what you just said cause repeat transmission is coming out

ok heres a good exap...flatter-blatter
blatter-flatter flatter -blah.

right lets start again

flatter-blatter by marine January 15, 2004