a mean person
A mean person is a f***ing alien from another galaxy sent to Earth to make your life a nightmare. They come out of nowhere and throw s#!*% at you just for fun.
A random kid in your class threw a eraser at you because you said he looked like a f***ing blob.
Your neighbor threw a bag of chips at your head because you said his dog was a f***ing mess.
A guy in the park threw a soda can at you because you said he looked like a f***ing potato.