A slang term for the bit of shampoo or conditioner that you didn't wash off in the shower, that you won't notice until you've already gotten out and dried off.
Damn bro you need to rinsebetter, you've got a cum demon on your neck!
A person who sucks a lot of cum and is also a demon and a slut. usually, terminology only used when someone doesnt know what else to insult another person with. Basically, stupid assholes say to their perfect ex-girlfriends.