This Demonstration calculates the motion in time of Kermit's legendary What-Happens-Next-Machine from Sesame Street. A mass is dropped onto a seesaw. The seesaw pulls a rope that opens the lid of a box, from which a balloon is freed that switches on a radio. Quite entertaining, but unfortunately for the physicist on Sesame Street, bugs and breakdowns flaw the performance. Here a functioning machine is simulated. You can also try out which masses, heights, and lever lengths cannot free the balloon.