(Noun)Someone who likes to defacate in unlikely public places, with or without the support of onlookers. This is often for a feeling of shock-satisfaction.
Come back here you Phantom Turd Menace and clean that stinking feces from my fridge
Huey! Next time you're at the peep show, try masturbating instead of power-shitting all over the window like a Phantom Turd Menace!