Someone who leaves another person in a partnership because they got done with the task first.
"Joeh you are a flat leaver!!"
Giving one a a burn in the middle of the forehead with a black and mild cigar, then proceeding to beat them with a sock filled with rolls of quarters
I'm gonna give Tony a rascal flat if he doesnt stop.
When a female/male is riding their partners face, and on orgasm they defecate on their partner's forehead and flatten it with their ass cheeks.
Marry was riding my face so hard and gave me the largest Michigan Flat Tire that I'm still trying to wash it out of my bangs.
a person who do to much and dosent get any attention from it.
Commonly used to describe a girl with the tits of a 10 year old annorexic male. Can be referenced to as an acronym, meaning "Forever Lacking Any Titties".
Person 1: I gotta say, Emma's pretty hot, I think I'll go for it
Person 2: Are you joking?? She's as flat as the Great Plains!
Alternatively, with the acronym in place...
Person 1: I gotta say, Emma's pretty hot, I think I'll go for it
Person 2: Are you kidding me? She is, and will forever, be F.L.A.T
(The first instance is much more commonly used)
Bent word of approval with Northern Germanic roots. Shortened form of "flat out right."
Example...
Me: That man is a legend!
Him: That's flat, brother! That's flat.
Dude, when you said she was your one and only... that was flat!