look up any word, like usuratonkachi:
 
1.
A female with a size of breast from size D onwards only. They must be perfectly rounded and generaly symmetrical. The female must be pale/white in skin colour to make sense of the 'moon' comparison.
male1: 'check her out man, those are pretty big!'
male2: 'yeah I see but see the friend? those my amigo are Moon boobs'
by jwinfield April 08, 2008
 
2.
JUST LIKE THE NAME SAYS. BOOBS THAT ARE OUT OF THIS WORLD
moonboobs are great, so are --a cup, b cup, c cup, d cup
by assmonkeys for life April 15, 2009