Raj: Well, so you're on his side?
Penny: I'm just saying, that's what friends do. You know, they bust on each other. It doesn't mean anything.
Leonard: Well, I'm not surprised you think so.
Penny: Why is that?
Leonard: Well, you can be kind of mean to me.
Penny: Well, that's because you're- Wow. I don't know how to finish that sentence, either.