This was the conversation between Tom and our 2 1/2 year old this morning.
Noah: On the potty.
Tom: And where do you go pee?
Noah: On the potty.
Tom: So where are you NOT going to go poop and pee.
Noah: On the wall.
Tom was looking for the response "in my underwear" but I guess it's important to make it clear that we don't pee and poop on walls.