When a female squats over the face inserting the labia into the mouth performing an up and down dunking motion usually while the recipient is sleeping.
The word one uses when one gets tea-bagged, except by a girl. How it works is left up to the users sick imagination. More likely to be heard used over the internet, particularly X-Box Live.
ThaaManlyMan: Shut up and make me a sandwich.
KrAZyGIrll299: What?! Oh, you're gettin' tea-vagged now!