Definitions by Corey Ray Slackinstein

Plunging 

A vigorous form of oral sex, where the female lays on her back with her head tilted back, while the male straddles her face and plunges his cock deeply into her throat.

I was plunging that chick so hard she threw up on my cock.

Plunging by Corey Ray Slackinstein September 28, 2010