It is hurtful to joke around too much with people.
Penelope likes to joke around with her friends, but sees her friend Rita is having a bad day.
Penelope wants to make a joke.
Penelope decides to joke around with someone else in the group who is in a better mood.
Penelope makes a joke about Rita's hair that would normally not be taken seriously by Rita.
Everyone, including Rita, laugh at Penelope's joke, and Rita feels better.
Rita gets very angry and tells Penelope that she doesn't want to talk to her again.