I had the privilege of taking Baba to the doctor because his "pee-er thing 'tung when pee shot out!" We walked in to check in with the receptionist and my child says, "Mom, I want to talk to her."
So I lift him up. He then says, "I'm here because I'm sick. My pee-er thing 'tings when pee shoots out." The receptionist was able to keep a straight face until she looked at me and saw that I was giggling. We then had the most exciting adventure in his short life - peeing in a cup. He thought that was the neatest thing ever and has been asking to pee in a cup since then. He also has been telling everyone and their brother that he got to pee in a cup.
When the doctor made it in the room, my child scales the examining table and announces, "my pee-er thing hurts. Do you have the tools to fix it?"
The doctor almost giggles. I have told Baba repeatedly that pee-er thing is not the proper term, but he keeps telling me he likes pee-er thing better. Oddly enough, he has no problem calling his knees patellas as in, "Mom, I washed my patellas, can I get out of the tub?".
Anyway, after our fun at the doctor's office, he announces he doesn't want to be a big boy any more. I ask him what he wants to be. He says, "I want to be a girl because girls don't have pee-er things and if he was a girl he wouldn't have a pee-er thing and then his pee-er thing wouldn't hurt."
I really couldn't argue with that logic.