flat-chested

When a girl's chest is flatter than a board of wood

Damn, that girl is flat-chested!!!

by The Reaper of Life September 17, 2018

flat chested

Flatchestsed,

Very very small boobs or no boobs at all
Any thing less than a C cup

Flat chested,
I'm flatchested,my boobs don't fit this bra!

by Kayonce January 25, 2017

flatcest

The act of having sex with your flatmate, even though you know this may be inadvisable given that you have to live together afterwards.

"I walked into Rachael's room and she was in bed with John! They totally committed flatcest last night!"

by possessed July 23, 2007

flatchested

the name for a person with a very flat chest. usually very offending to most girls who have no boobs.

A: ew. look at that tiffany girls myspace picture.
B: i know. no one wannts to see her in a bathing suit.
A: and shes pressing her arms together ro make it look like she has boobs.
A: she is so flatchested.

by Alexa H August 24, 2006