Twinkle, twinkle, in the potty!
I will pee pee, I will poop!
In the potty, I like to pee pee!
Twinkle, twinkle, I like to poo poo!...
Followed by a Spanish version: Estrellita donde esta, me pregunto. I need to peepee!...
Then a verse all about Margret coming over to play and getting time out...
(I must have missed watching this episode on Sesame Street...)