"I. Am. A Robot."

Overheard: #2: (wailing at the top of his lungs and wearing his robot hat) "Push dah SWITCH!!"

#1: "I don't want to. So there."

#2: (almost indecipherable screeching by this point) "YES! YOU PUSH DAH BUTTON NOW!!"

#1: "Oh fine." (makes switch-flicking motion near #2's back) "There."

#2: (happy again -- starts marching around the room) "I. Am. A Robot. I. Am. A Robot. I. Am. A Robot. (...)"

#1: "You. Are. A Goofus. You. Are. A Goofus."

Both kids collapse into piles of giggles.