Bernadette: Are those Russian rockets safe?
Howard: Well, I mean, safe as it can be when it was build by the good folks who brought you Chernobyl.

Until you either do not go or go to Wil Wheaton's party you are simultaneously my friend and not my friend. I'm characterizing this phenomenon as Schrodinger's Friendship.

Sheldon

It's gonna be another Wil Wheaton sausage fest.

Stuart

Okay if you're going to question the importance of an actor's signature on a plastic helmet from a movie based on a comic book then all of our lives have no meaning!

Stuart

Raj: She gives me things, too.
Raj's father: Yeah, yeah, I'm a gynecologist. I know exactly what she gives you.

Sheldon: The Koothrappalis aren't just rich, they're Richie Rich rich.
Penny: How much is that?
Sheldon: About halfway between Bruce Wayne and Scrooge McDuck.

Raj: Whatever, dude. She kissed me.
Howard: It might've been on your lips but it was my kiss.
Raj: Oh, fine, let's agree she kissed both of us.
Howard: Okay.

Tell her her eyes shimmer like opalescent lilies in the lake of the palace of the celestial maidens.

Raj

Raj: Okay, I'm going to play it cool. Tell her, "Maybe. Whatever, babe."
Howard [translating in sign language to Emily]: He'll text you.

Okay, so future grief-stricken widow is the one to beat.

Penny

Raj: I don't know if I want to play anymore.
Sheldon: Because you don't have a girlfriend? Well, good lord, if that becomes a reason not to play Dungeons & Dragons, this game's in serious trouble.

Leonard: We enter the dungeon.
Sheldon: You see a dragon.

The Big Bang Theory Season 5 Quotes

You can't blame yourself. When your prefrontal cortex fails to make you happy promiscuity rewards you with the needed flood of dopamine. We, neurobiologists, refer to this as the skank reflex.

Amy

I feel like two totally different people. Dr. Jekyyl and Mrs. Whore.

Penny