Billy: "I am going to fuck your ass so hard you won't shit for a week."
Jane: "O' yes give it to me as hard as you can in my dirt pipe."

Dude, I was so unhappy about my girl, until I spoke to my serotonin donor who really helped me feel better

To run up in someone's dirtpipe. Can also be used when reffering to deficating; as in "I have to go clean out the old dirtpipe."