A person encountered a rude John Mayer who kept making sexist and mean jokes that no one found funny. When they called him out, he insulted them.

Chevy Chase verbally attacked a 9-year-old fan who asked for his autograph and later insulted the child's father, proving to be a jerk.

Eliza Dushku blocked a fan who relapsed after receiving a necklace as a gift from them, and later gifted the same necklace to someone else on a TV show.

I worked at a camp for eight weeks with Gwyneth Paltrow's kids for $5 an hour. She didn't tip, although parents typically do.

Nicki Minaj demanded people not look at her face and clear out of the room before she entered, according to a person who worked with her.

Katie Price demanded complete privacy during a flight, instructing airline crew to stay away from her unless called. When questioned, she introduced herself.