Penny: What?
Leonard: He said we should maybe enter you in the killer robot competition.

Leonard: If they didn't want to be yelled at by crazy nerds they shouldn't have started the Syfy channel.

Leonard: Where have you been?
Sheldon: Oh, Leonard, if I was prone to sarcasm I'd say I was pulling off a major heist at the museum of laundry baskets.
Leonard: (Counts to 10 and takes a breath) What I meant was, gee Sheldon! You were gone a long time!

Leonard: You come to the end of the tunnel and find a large chest. What do you do? And, Howard, do not say, I feel up the large chest.
Howard: Excuse me. I'm a married man now. I wasn't going to say anything so juvenile.
Leonard: Great. What do you do?
Howard: I walk up to the large chest, bury my face in it and go blublublublublublublublu!

Leonard: Okay, there are ogre tracks and a trail of broken candy canes in the snow. Sheldon, what do you do?
Sheldon: I signal my contempt for your cruel plan to shove Christmas joy down my throat by making a gesture that says get a load of this guy.

Leonard: Set your phasers to stun. If we vaporize Penny, I'll never get a girlfriend that pretty again.

Howard: (Slams his car door) Will you please talk some sense into your lunatic roommate?
Leonard: You're both acting like lunatics!

Leonard: Please be good, please be good. Uh-huh, uh-huh. Okay, she writes like she cooks.

Leonard: There's not going to be a confrontation. I bet he can't even spell confrontation.
Kurt: C-O-N...frontation.

Penny: David is not smarter than you, because a smart man would take the naked pictures of his wife off his phone before trying to take naked pictures of his girlfriend!
Leonard: He tried to take nude photos of you?
Penny: That's what you took from that?! The guy is married!
Leonard: Oh, that's terrible.
Penny: And you, if you're so fine with how the way things are between us then why are you so jealous?
Leonard: The important thing is he's married and that's terrible.
Penny: Nice save, genius.

Leonard: Okay, don't take this as a criticism but you do have that over exposed to gamma radiation thing going on.
Penny: What?
Leonard: Usually your the easy going Bruce Banner but when you get angry you turn into (makes growling noise).
Penny: I turn into a bear?
Leonard: Gamma radiation, Bruce Banner; you didn't get the Incredible Hulk from that?

Bernadette: Come here, tushie face.
Leonard: Tushie face! That is going on twitter right now.

Penny: Leonard, look. Sheldon's hugging me!
Leonard: It's a Saturnalia miracle.

Penny: It's just this is only our first date.
Leonard: Well, why don't we just figure out where we're going, and when we want to get there, and then rate of speed equals distance over time, solve for 'r'.
Penny: Or we could just wing it.

Raj: Hey, want to spend some time playing the new Star Wars game this weekend?
Leonard: Oh, I don't know. I kinda promised myself I'd get off the computer, be more physically active, get some exercise.
Howard: You're about to walk up three flights of stairs.
Leonard: Good point. I'm in.