It is not okay to call people names.
Charlie is getting into an argument with the manager of a grocery store who he feels is ripping him off.
Charlie wants to tell the manager off.
Charlie tells the manager why he is very unhappy in the store.
Charlie raises his voice and starts cursing at the manager and calling him names.
The manager listens, and tells Charlie he'll look into fixing things.
The manager turns away from Charlie and tells him to leave, not bothering with him anymore.