Cannibal

A psychopath that has desires to consume human flesh in a meal

Dude: Have you seen the homeless guy down the street?
Other Dude: Yeah, I heard rumors that he's a cannibal

Rubber Bones

When you feel so tired or relaxed that your bones feel like rubber/jello, and all you can do is just wiggle (kinda like those balloon guys at the front of a car dealership)

Guy One: Hey man, why tf you wiggling like that?
Guy Two: Oh sorry, I got Rubber Bones

Stinky Satan

When your fart has such a deep pitch and is so loud that it sounds like a demon escaped your asshole

Guy One: BRUUUUUUUGHRFF
Guy Two: Wtf was that?!
Guy One: Sorry man, I think I just let out a stinky satan