This is something called a ha-ha circle! Get your friends together, lie on each other’s stomachs in a circle, and someone starts giggling. Eventually everyone is roaring and there is no way to stop it except to stand up.
That’s it, we’re gone.
Here is a series of pictures from when a very strange boy named Seth managed to shove himself completely into a JC Penney’s bag. His “hatching” is documented here.