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.
Busta Rhymes insulted a fan who couldn't provide a hat in his size at a jersey shop in Atlanta.