Leonard: Here you go. Oh, you owe me another two dollars. The price of mu-shu pork went up.
Howard: It's getting tougher and tougher to be a bad Jew.

Howard: Ugh. This mu-shu pork is burning a hole through me duodenum.
Raj: Leviticus 11:3 "Only that which parteth the hoof and cheweth the cud among the beasts shall ye at."
Howard: Hey, do I mock you with the Bhagavad-Gita every time you scarf down a whopper?

Wolowitz: *After he fixed Sheldon's algorithm* Gee, why can't Sheldon get a friend?

Wolowitz: Have you thought about putting him in a crate when you're out of the apartment?

Wolowitz: The way I see it, I'm halfway to pity sex.

Wolowitz: As delicious as the appetizer may be, sooner or later we will have to succumb and eat the entree while its still ... hot.

Mrs. Wolowitz: Want me to get you a popsicle?
Howard: Cherry, please!
Mrs. Wolowitz: I ate the cherry. All that's left is green.
Howard: You make me wanna kill myself!

Sheldon: So what do you think, Howard? It's not that bad, right?
Howard: A little electrical tape, some solder ... Are you insane? I've seen space probes that crashed into the desert that were in better shape than this.

Wolowitz: He doesn't do anything for me. If I were going to go that way, I'm more of a Zac Efron kind of guy.
Raj: Oh yeah, like you have a shot with Zac Efron.

Howard:Hey, isn't that the guy who won the MacArthur genius grant last year? (everyone looks) No, not all at once.
Raj: Then how?
Howard: Leonard. Now Raj. Now Sheldon.
Raj: I didn't get a good look. Can I go again?
Howard: No.

Howard: Gather around, kids. It's time for Sheldon's beloved Christmas special.
Sheldon: In the pre-Christian era, as the winter solstice approached and the plants died, pagans brought evergreen boughs into their homes as an act of sympathetic magic, intended to guard the life essences of the plants until spring. This custom was later appropriated by Northern Europeans and eventually it becomes the so-called Christmas tree.
Howard: And that, Charlie Brown, is what boredom is all about.

Sheldon: Oh, Penny. I know you think you're being generous, but the foundation of gift-giving is reciprocity. You haven't given me a gift, you've given me an obligation.
Howard: Don't feel bad, Penny. It's a classic rookie mistake. My first Hanukkah with Sheldon, he yelled at me for eight nights.

Howard: That doesn't count. Do over! Do over!
Sheldon: There are no do-overs in Wii bowling.
Howard: There are always do-overs when my people play sports.

Howard: Yep. It's officially a bro-mance.

Leonard: I gave it a lot of thought and I decided it was time for us to live together.
Howard: Leonard, huge mistake. There's a whole buffet of women out there and you're just standing in the corner eating the same devilled egg over and over again.