I wanted to make a clever chemistry joke, but the best ones argon.
A stupid person laughs three times at a joke; once when everyone else is laughing, a second time when he actually gets the joke, and a third time when he realizes he was laughing without getting the joke at first.
Happiness: The emotion that puts your face in motion. Fear: The emotion that puts your legs in motion. Anger: The emotion that puts your fist in motion. Lesson: Don't be afraid or angry and you won't have to run and fight.