when one of ur friends takes a dump that is small and cute (resembling that of a kittie cat's poo) and duck tapes it to the hood of another friends car.
poo cacka means that u smell like a dead rat that got shoved up Guy Fieri's bumhole
Guy 1: ew what's that smell?
Guy 2: that's just Jonathan, he smells like poo cacka
Guy 1: what's poo cacka?
Guy 2: it's the smell of a dead rat that got shoved up Guy Fieri's bumhole.
Guy 1: oh ok.