come on ride the train
might want to hold your breath, though
in a polite way

The
wee-er one has been potty-trained for a while now. It's still new
enough, though, that she marvels at it from time to time. "You know,
mommy, I poop in the potty now," she'll remind me. "I am a potty train."

"A
potty train?" I reply. "Does that mean you go chugga chugga chugga
chugga pooooo pooooo!" I laugh, but am only rewarded with a roll of the
eyes.

"You are a superstar pooper," I say, trying again. She
smiles. "A Pooperstar, if you will," I say, pushing it too far (so to
speak). Again I get the eye roll.

I guess even when you're three your mom's puns are lame.