from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun The state of being
flat-chested; the state of having small breasts.
Sorry, no etymologies found.
The winner here, even if her joke about Sandra Bullock's flat-chestedness isn't particularly WTF-ish, has to be Betty White.
Ha, of course it does: it has oodles of ruffles to cover my flat-chestedness!
She eventually admits to Ryuuji that it was because she can't swim and that she everyone teased her behind her back about her flat-chestedness.