We found clever answers to this question online. Here are some: they exercise their right; they have a physical fit; they run amok.
You can also find the answer to this joke/riddle by solving this math exercise.
Want more jokes? See how far you can go with a straight face with the 10 funniest jokes you will ever hear.
Humor can be a double-edged sword. If you use it properly it can help you, but misusing it will set you back. Here are some advice on how to come up with spontaneous humor in social situations shared by Scceedsocially.com.