A girl who electively pushes out her breasts while also swinging her ass and pushing it out in an attempt to look attractive to others. The effect is that of a goose's back.
The girl is such a gooseback- she keeps rubbing on me at the bar.
The mascot of the junior highschool the Teen Girl Squad attends. Which is, by the way, the only junior high school I know of with a bottomless spirit pit.