Used to describe classically shaped and sized women's breasts, that are neither too large nor too small, commonly quantified as 34C. When a classic, conical-shaped martini glass is placed over each, they fit perfectly inside, with no air space underneath, and no excess breast sticking out.
Dude, that bitch's tits are PER-fect!

Word! Martini glasses, them is!
by mistahtwist March 10, 2011
the horrid shape of women with love handles, a gut, and absolutely no ass; the opposite of the hourglass shape
I hate chicks with the martini glass shape. If I could put the fat in their midsection in their ass, this would be a perfect world.
by 2014_chiguy November 21, 2007