Sheldon, Howard, and Leonard give a presentation about careers in science to a group of girls in junior high on The Big Bang Theory. "The Contractual Obligation Implementation" is the 18th episode of the shows sixth season.
Sheldon: Why do you have the Chinese character for "soup" tattooed on your right buttock? Penny: It's not "soup," it's "courage." Sheldon: No it isn't. But I suppose it does take courage to demonstrate that kind of commitment to soup. Penny: How'd you see it? You said you wouldn't look. Sheldon: Sorry. As I told you, the hero always peeks.