The TriplePlay involves sitting down on the toilet, and participating in: urinating, defecating, and masturbating. Thereby, as is the act in Baseball, by making a TriplePlay one has performed the act of making three outs in the same continuous play.
Person 1: Woah! What took you so long in there? I don't knowanybody who takes that long in the bathroom!
Person 2: Well, I was performing a Triple Play..
Person 1: ...Awkward.