AKA as TSSS, Is when a greasy, hairy, and sweaty person sits on a toilet seat for a while and when they get up the sweat, hair, and skin cells dry on the toilet seat like a glaze. Making what looks like a snake skin that has been shead on the toilet seat. This is also very hard to clean off. You will need a Brillo pad
Dude, I went to the bathroom and the guy before me left me a toilet seat snake skin so I had to use a different toilet.