implies the top view of a woman's breast
, "neathage" implies the bottom view. This is usually accomplished by a female wearing a small shirt, or lifting up her shirt so that not only her abdominal is exposed, but also the bottom of her breasts. Neathage is also possible when a girl has a hand bra
, covering the nipples but exposing her cleavage
See also: under boob
Dude 1: Yo did you see that chick?
Dude 2: You mean the hot one wearing a baby GAP shirt
Dude 1: Yeah man you could see her neathage!
Dude 2: Hell yeah dude!