Pissty-Nine
The same thing as a sixty-nine (69), but with both parties pissing.
Person 1: Dude, I heard that Brock and Misty were pissty-nining over the weekend.
Person 2: Why do people pissty-nine? Its nasty.
Person 1: Don't knock it till you try it, bro.
Person 2: Why do people pissty-nine? Its nasty.
Person 1: Don't knock it till you try it, bro.