I'm not sure this is the pee pee song you were looking for but here ya go:
Pee pee......have you ever heard a song about pee pee?
It's a little bit of rain coming out of you.
It's a tinkle it's a puddle it's a wee wee too.
Wee wee in French means yes yes yes.
No no in French means no.
Red is stop and green is go and sometimes pee pee is yellow.

Send "The Pee Song" Ringtone to your Cell