Denting the Turd
The act of anal sex.
"Dude, that girl I took home last night totally wanted it in the butt. I was up all night denting the turd."
Also past tense, "Oh, man- you dented the turd?!" "I think she had her turd dented."
Also past tense, "Oh, man- you dented the turd?!" "I think she had her turd dented."