Sheldon: Hey, you want to hear an interesting thing about tomatoes?Penny: Uh, no, no, not really. Listen, didn’t you say you needed some eggs?
Sheldon: Yes, but anyone who knows anything about the dynamics of bacterial growth knows to pick up their refrigerated foods on the way out of the supermarket.
Penny: Oh, okay. Well, then maybe you should start heading on out then.
Sheldon: No, this is fun. Oh, the thing about tomatoes — and I think you’ll really enjoy this — is they’re shelved with the vegetables, but they’re technically a fruit.
Penny: Oh, interesting.
Sheldon: Isn’t it?
Penny: No, I mean what you find enjoyable.
The Big Bang Theory 1.04 - The Luminous Fish Effect





