Leonard: Why don't you just tell people you're a zebra?
Sheldon: Why don't you just tell people you're one of the seven dwarves?
Leonard: Because I'm Frodo.
Sheldon: Yes, well, I'm the Doppler effect.

Raj: (Talking about Howard) Oh, if only I had his confidence. I have such difficulty speaking to women, or around women, or at times even effeminate men.

Penny: So, how was paint ball? Did you have fun?
Sheldon: If you consider being fragged by your own troops fun. (To Howard) You clear a space on your calendar. There will be an inquiry.

Wolowitz: Gentlemen, to the sewing machines!

Girl: What are you?
Sheldon: I'm gonna give you a hand: weawww.
Girl: A Choo choo train?
Sheldon: Close! weawwww
Girl: A brain damaged choo choo train?

Raj: Okay, if no one else will say it, I will. We really suck at paintball.

Wolowitz: Check out the sexy nurse. I believe it's time for me to turn my head and cough.

Sheldon: You know, we were annihilated by our own incompetence and the inability of some people to follow the chain of command.
Leonard: Sheldon, let it go.
Sheldon: No, I want to talk about the fact that Wolowitz shot me in the back.