Describes someone so outrageously drunk they end up horizontal—usually on a couch, the floor, or wherever gravity decides they should be. Comes from the image of someone literally being on their back, flat as a pancake, because standing is no longer an option.
by Handle Not Found July 12, 2025

Flat cap man is Ville Valo, the singer of the Finnish band HIM. He is called Flat cap man for wearing his signature Flat cap.
You: “Wanna see a new picture of Flat cap man?”
Friend: “Oh nooo! Yes! And he can have a flat cap party with us!”
Friend: “Oh nooo! Yes! And he can have a flat cap party with us!”
by joeyisnotstupid March 2, 2025

To smugly turn and face the opposing direction of an intended audience while having a full fledged conversation usually when it is business critical
*Three People speaking in a triangular formation; one of them is turned with their back to the other two, while the two are in avid discussion*
Lizzy- "Dick, hey I'm trying to communicate a few critical things that need to happen by the end of your shift"
Dick- "Oh, is that what you call it." Hmph (back turned to Lizzy, facing Barnaby)
Barnaby- "Did it not occur to you: You're flat-backing your boss... dick"
Lizzy- "You are a dick, Dick"
Lizzy- "Dick, hey I'm trying to communicate a few critical things that need to happen by the end of your shift"
Dick- "Oh, is that what you call it." Hmph (back turned to Lizzy, facing Barnaby)
Barnaby- "Did it not occur to you: You're flat-backing your boss... dick"
Lizzy- "You are a dick, Dick"
by BMiller58 December 24, 2022

by thenavneet January 4, 2018

Being FLAT broke
by Blackmigo954 September 5, 2021

if someone says you are flat, it means ur flat basically.
oinkawa dooru is a very well represented demonstration of this term referring to his FLAT ASS
oinkawa dooru is a very well represented demonstration of this term referring to his FLAT ASS
guy 1; "ayO lOokiE hErE, ShE flat aSfFFFFf"
guy 2; "nah nah she built like a door deadass"
guy 3; " but she do be flat like thattttttt"
guy 2; "nah nah she built like a door deadass"
guy 3; " but she do be flat like thattttttt"
by hot2dmengobrrrrr May 24, 2021

Flat tongue is used to refer to the American - USA (excluding persons with Georgia, Texas, and New York accents) accent.
Speak with an educated person from the United States, excluding persons from Texas, Georgia, and New York with accents, and you'll hear the flat tongue accent.
by Canned Cool Whip January 2, 2012
