Penny: It was ... okay.
Leonard: Okay?
Penny: Yeah, it's a perfectly good word. I mean, you put it in front of dokay and you really got something.

Sheldon: Woman, you are playing with forces beyond your ken.
Penny: Yeah, well your Ken can kiss my Barbie.

Leonard: What am I supposed to do?
Penny: Err, keep your mouth off other women.

Leonard: If I take it off, Sheldon wins.
Penny: Sweetie, every night you don't kill him in his sleep, he wins.

Raj: I don't like bugs, okay. They freak me out.
Sheldon: Interesting. You're afraid of insects and women. Ladybugs must render you catatonic.

Wolowitz: I think that you and Penny had a poor night.
Leonard: It wasn't poor. It was ... just fine.
Raj: Dude, the fourth Harry Potter movie was just fine.

Raj: Ooo, big talk from a man who was once treed by a chicken.