Vag Tap
Almost like a ball tap, except tapping a girls vagina.
Carly wouldn't shut her damn trap, so I vag tapped her.
vag on tap
A steady supply of sex from a female. This could be from one female, like from a steady girlfriend. Or it could be from many girls, like if you happen to be a good looking celebrity who gets lots of different chicks.
My girlfriend is a crazy, controlling succubus. But hey, my dignity is a small price to pay for having vag on tap.