piper wiper
The act of fucking a girl in the ass, and as soon as the man cums, he pinches her neck very hard. This causes the woman's asshole to clench up, and when the man pulls his penis out, it is perfectly clean.
A piper wiper gets my dick nice and clean.
Breathin' Piper No Wiper
A poop log that has been launched deep into the pipe, but is so long that the other end sticks out the top of the toilet pool, as if it was breathing. Additionally, it leaves behind no residue for the pooper to wipe.
"Ma'am, I'm going to need to use your poop knife; we've got a breathin' piper no wiper situation in there."