It's rude to insult or put down others.
Kevin is in an audience at a stand up comic event where the comedian is on stage doing his act.
Kevin wants to yell something at the comedian.
"Kevin raises his fist and screams out ""All right, yeah!"" and begins to clap his hands loudly at the comedian."
Kevin screams out that the comedian is horrible and tells him he sucks, turning to the crowd and laughing.
The comedian is amused by Kevin's cheerleading and relaxes on stage, delivering an even better performance.
The comedian is horrified, annoyed and distracted by Kevin and begins to hate him.