The noticeable presence of breasts. Could be because of the size, exposed cleavage or large number of noticeable breasts in a particular place.
The truth is, of course that all boobs rule, (well, not man-boobs); be they big, small, fake or strangely shaped. The world would be a better place if all girls embraced their boobage. Set them free ladies. Set them free.

BOOBS!aka the best thing everrrr

Any "inappropriate" parts of body. Generally genitalia. Commonly the gouch or taint.