Very drunk, but in a lethargic sense. The term refers to the vertical position of one laying down or passing out on account of heavy drinking.
"Man, I wish I hadn't drank all that gin before the party. I was completely flat the entire time we were there."
by paul22 December 13, 2009
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British a bunch of rooms on one floor - a single-story building. It is commonly confused with "flat," meaning apartment.
i live in a flat, but not an apartment.
by I belie definitions September 08, 2006
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Uncool, bogus, lame, wack, or dick.
I got fired today for smoking weed in the bathroom...my boss was totally flat about it.
by J March 12, 2003
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When someone has either smoked marijuana to the point where they feel deflated and the possibility of physical activity is out of the question
When the weeds rank of dank makes you that way. The name comes from the above the influence commercial called "flat".
Other symptoms of being flat include being anti-social
That weed made Emily so flat yesterday, she couldnt even move her arms
by Rammy12 November 04, 2010
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1) A peice of land without any hills or valleys.

2) What one might call a girl's chest if she has a little cup size or no boobs at all.

3) A word that is not veiwed as offensive or foul, but can be substituted for any words that are offensive or foul.
1) Charles Ingalls: The prairies are so flat. Myabe I'll build a house here.

2) Drew: Dude, Amy is so flat.
Nick: She's only three years old...

3) Paul: Flat! What the flat is going on here?!
Marie: Just shut the flat up! You would never flatting understand anyway!
Joe: Flat you marie! You flatting flat! I never want to flatting see your flatting face ever flatting again!

Paul: You're such a flat...
by Cha, brahhh. (: June 08, 2010
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bad; boring; dull; opposite of steep
Homework is so flat!
by Eileen March 14, 2003
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