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3.
A game for two players, usually male. The idea is that the two players masturbate each other, and the loser is the first one to get 'grossed out' by the gay loving and stop.
Joe: Hey Tom, i'm bored what shall we do?

Tom: I know, lets wank each other off. First one to get grossed out and stop loses!

Joe: Great idea Tom, we can call it Gross Out! let's play it right now!
by JackCharles January 13, 2006
 
1.
Also see grosse out.

The act of brossing someone out through mental or physical imagry.

To be grossed out by seeing somthing.
Dude that totally grossed me out

1: Dya know what thats made of ... its not really cow meat your eating, its rat.
2: Stop trying to gross me out, im gonna finnish this burger.

( after someone spewed ) now thats a gross out
by Gonk September 28, 2005
 
2.
A game for two players, usually male. The idea is that the two players masturbate each other, and the loser is the first one to get 'grossed out' by the gay loving and stop.
Joe: Hey Tom, i'm bored what shall we do?

Tom: I know, lets wank each other off. First one to get grossed out and stop loses!

Joe: Great idea Tom, we can call it Gross Out! let's play it right now!
by JackCharles January 11, 2006
 
4.
To take an acid trip
"I'm gonna gross out on acid in my room today."
by Johnny Juice March 30, 2006