A woman with no discernable breasts.
Wow, from the neck down that chick looks like a dude, what a flattie.
the worst type of fat chick. (fat AND no boobs)
"Check out that flattie, shes just your size Brady."
Slang name for someone who believes that Earth is flat, i.e., not spheroid.
Dude, did you just call me a flattie? You just flat-shamed me!
Yeah, I'm a flattie and proud of it, you globetard.
Travelling Showmans term for someone who lives in a house
Look at all the flatty's in the houses over there.
Contraction of flatmate used colloquially in New Zealand - Wellington in particular...
X: So are you meeting me at the pub?
Y: Yeah and my flatty will be there a bit later after she finishes work...
Noun: a woman with a flat chest.
Shut up, ya stupid titless flatty.
This refers to a woman's butt that is EXTREMLY FLAT. Its the opposite of a fatty and rytmes with it making the term easy to remeber
Did you see the Miss Universe contest? I can't believe miss Japan made it to the semi's with the "flatty girl" she had