The hand you beat off with. Use "Jill" instead of saying you're masturbating so people think you plugging and actual girl.
Friend 1: "hey, wanna hang out tonight?"
Friend 2: "nah I can, I'm gonna go tap Jill later"
Slang term for a grav (short for gravity bong). Derived from the force of gravity, 9.8 m/s^2.
Guy: hey dude are you going out tonight?
Bro: idk man I just ripped a fat ninety-eight (98)
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