A beer that is somehow cheaper- and crappier than Natty Ice. Displays the words "It's the water that makes it" right on the can.
Man, Big Flats actually makes Natty Ice taste GOOD!
by Wurbles February 4, 2011
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A fat girl who is flat chested; a fat chick who does not have big tits. An overweight girl with small boobs.

See also big fat flatty.
That poor fat chick has small tits. She's a big flat fatty.
by PMax April 14, 2008
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