In the episode of Phineas and Ferb where they build the "thing that you push down and never knows when it comes up" and candace hypnotises herself in a attempt to stop busting the boys when the "thingy that you push and don't know when it's going to come up" is finished phineas,ferb,isabella,baljet and Buford all go in but when they show a close up of everyone in there Buford has vanished!