Zack: You know, I saw this great thing on the Discovery Channel. Turns out that if you kill a starfish, it'll just come back to life.
Sheldon Cooper: Was the starfish wearing boxer shorts? Because you might have been watching Nickelodeon.
Zack: No, I'm almost sure that it was the Discovery Channel. It was a great show. They also said dolphins might be smarter than people.
Leonard Hofstadter: They might be smarter than some people.
Zack: Maybe we can do an experiment to find out.
Sheldon Cooper: That's easy enough. We need a large tank of water, a hoop to jump through, and a bucket of whatever bite-sized treats you find tasty.
[the guys laugh at him]
Zack: I don't get it.
Leonard Hofstadter: A dolphin might.
Zack: Oh, I see. You guys are inferring that I'm stupid.
Sheldon Cooper: That's not correct. We were implying it. You then inferred it.