This is one of what I'm sure will be millions of trampoline pics this summer. There's Jack, with his feet up in the air. I would "rescue" him from the older kids by telling them to stop jumping so that Jack could get up. He would promptly be tossed off his feet, sometimes on purpose, and bounce around like a little piece of popcorn while wildly laughing.
I tried to take him off a few times but he would run to the middle, throw his feet in the air and begin the process again.