Why is Mickey checking out Pee-wee Disguised in Drag - oh right, he just escaped from prison!
During the Show Within a Show, Pee-wee corpses shamelessly while standing in the background, smirking and mouthing the other actors' lines. Toward the end of the scene, he glances at something off-camera and then slides over, partially out of sight. Apparently the annoyed director motioned for him to get the hell out of frame because he was ruining the take.