Howard's mom: Howard, I made cookies for you and your little friends.
Howard: That's great, mom. Thanks.
Howard's mom: I'll bring them up with some Hawaiian Punch.
Howard: *startled* Don't come up here!
Howard's mom: Why not? Are you ashamed of your mother?
Howard: Yes, but that's not the point. Get me out of here!
Leonard: Do you have any ideas, Raj?
Raj: Right now all I can think about is cookies and Hawaiian Punch.

Raj: Amy, good luck getting these guys excited about a dinner with a theme. I gave up when no one cared about my Tom Hanks-Giving.

Raj: Oh man, first monster I see I'm gonna sneak up behind him, whip out my wand and shoot my magic all over his ass!
Stuart: Do you hear yourself when you say these things?

Raj: Doesn't anyone have a rod of resurrection? Because if you've got one, I need it bad. Get in here with your rod and give it to me.
Stuart: Okay, you need to say these things in your head before you say them out loud.

Leonard: I'd suggest using some lubricant, but I have a feeling you fell on that as well.
Howard: Not funny, Leonard.
Raj: Really? A robot hand’s got a death grip on your junk, dude. That’s funny, ask anyone.

Althea: What is this?
Howard: It's a robot arm.
Althea: Where's the rest of the robot?
Howard: I only built the arm.
Althea: Because that's all you needed, right?

Sheldon: I am aware of the way humans usually reproduce which is messy, unsanitary and based on living next to you for three years, involves loud and unnecessary appeals to a deity.
Penny: Oh, God.
Sheldon: Yes, exactly.