public mattress
A person who's having a high amount of sexual intercourse throughout their life. (mainly prostitutes, bitches and your girlfriend)
Hey, do you wanna hang out with Jessica again, your public mattress?
Friend 1: Where are you going to sleep tonight, man?
Friend 2: Er, I'll probably search for a public mattress and stay there until tomorrow.
Friend 1: Where are you going to sleep tonight, man?
Friend 2: Er, I'll probably search for a public mattress and stay there until tomorrow.