A Leap Frog
A party where a bunch of people line up on their hands and knees, and the guy in the back goes wild with his junk, butt, or any object he can find.
At the leap frog party, Mark used a baseball bat to go from one girl to the next and the next and the next.
The leap frog started with Tim. He used his finger, then his tongue, then he brought a vegetable from the fridge.
The leap frog ended when Sarah took the baton and used a glass bottle to finish the relay.