Toboggan Pipeline

While riding a toboggan in a 69 position with your partner. Your girl accidentally sharts, but with the frozen weather it comes out frozen solid. And the turd glides off your forehead.

I was going downhill in a sled and 69 ing my girl. She sharted and gave me a "Toboggan Pipeline"

Mexican Pipeline

When you do the Mexican lawnmower and catch all of the shit in a condom, freeze the condom and insert back up anal cavity

Hey babe, wanna do the Mexican pipeline with me?

Sandusky Pipeline

Jizzing in someone's asshole then performing the Sandusky Cropduster.

Becky: "I did the Sandusky Pipeline to my boyfriend."