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1. massive breasts on any girl
2. unusually extra-large breasts in relation to a girl's body type or size
Did you see those? Those tits were huge. And she was skinny. I mean, on a large girl, they'd just be regular tatties. But on her, they're smatties!
by douglas001 September 19, 2008
meaning a girl has a small but fat butt; small fatty; fat but small ass
yo risma you got a smatty!
by xRiSMABOOx May 17, 2008
Slang term for a sandwich - does not have to have ham in.
This egg and bacon smatty is the nuts.

I can't eat this smatty, it's got mayonnaise in.
by tubes11 November 10, 2010