boing

Meanings

1. A representation of the sound of something bouncing.
2. Announcing the presence of large, pert breasts, which are bouncy.
3. Announcing the advent of male arousal (erection), via the metaphor of a spring springing energetically.

1. The sound made by an elastic object (such as a spring) when bouncing; the sound of a bounce.
2. Large breasts.

1. To make a boing sound or bouncing motion.

Etymology

Onomatopoeic. The “large breasts” sense is reborrowed from Japanese ボイン, in turn from English boing.