Poopourri is the residue left on a toilet seat after someone has taken a bad and messy shit. Generally so bad that it requires you to seek another toilet to utilize.
Damn, who the hell keeps leaving the poopourri all over the shitter? I'm tired of having to run upstairs because our crapper is so fucked up!
When two people sitting in adjacent bathroom stalls take a shit concurrently, creating a mixture of shitty odors. Can be accented with the addition of ineffective bathroom spray, which enhances the aroma with the slight smell of flowers.