Player 3
When one person walks in on two other people having sexual relations and yells "PLAYER 3 HAS ENTERED THE GAME!!"
Example:
A man walks in, and 2 of his friends are going at it, he suddenly yells, "PLAYER 3 HAS ENTERED THE GAME!" and joins in on the fun.
A man walks in, and 2 of his friends are going at it, he suddenly yells, "PLAYER 3 HAS ENTERED THE GAME!" and joins in on the fun.