Lyrics:

Mr. Hanky: "Poo-choo trian's layin' down its tracks, with a POO! CHOO! all the way and back!"

Eric Cartman: "Poo-poo train is my favorite thing! Spreading Christmas joy as we ride and sing!"

Mr. Hanky: "Christmas time wouldn't be the same, without hugs and kisses and a poo-choo train."

When you eat dirt for the first time and leave your family to build a shack in the woods

Train made out of turds; created by Mr. Hanky on South Park as a way to reach the North Pole.

When sitting on the porcelain throne, preparing to drop some deuces a steady stream of fart air emits from your bunghole, sometimes pinched enough to emit a squeaking or whistling sounding fart announcing the turd train a'comin until the poo seals off the space and stops the whistle

the act of manking your male friend in the bunghole who buys drugs for you from a gay dancer