It is rude to distract others from learning in school.
Dan is exited to tell a joke he just made to his friends.
Dan wants to make everyone laugh.
Dan wait's until recess, and when everyone hears it they burst into laughter.
Dan stands up in class and tells his quip to the room and everyone loved it.
Everyone was able to learn in class and still were able to have fun.
Dan's classmates lost their concentration and can't focus on the schoolwork.