Leonard: Okay, so this is the main Comic-Con floor. It's where all the vendors and exhibits are.
Penny: Wow, that is a lot of people jammed in there.
Leonard: I know. Sometimes Howard wears a striped shirt so we can play "Where's Wolowitz?"

Sheldon: I suppose you're wondering why I put you through all this.
Leonard: You mean the last two minutes or the last 20 years?

Leonard: I know he can be a lot of trouble, but when I see him laying here asleep like this, I just think, how easy it would be to hold a pillow over his face.

Leonard: Who are you talking to?
Penny: Oh, just this guy I met at school.
Leonard: oh, great. We're still dating, right?
Penny: Relax. He's just a friend. We're doing an oral report together. He's really nice.
Leonard: I'm sorry, what was that? I had a little stroke after oral.

Raj: Maybe moving in was a bad idea. I haven't been here one day, I'm already causing problems.
Penny: You didn't do anything. It's Sheldon.
Leonard: "You didn't do anything.It's Sheldon." That'd make a nice needlepoint pillow.

Guy: Is this guy for real?
Leonard: Boy, I wish I could say no.

Penny: The pastrami truck moved.
Leonard: That is the danger of a restaurant on wheels.

Amy: I'm in this relationship, too. I need to stand up for myself.
Leonard: Of course you do.
Amy: And if he doesn't like it, he can move back here.
Leonard: Oh, he can try. He'd just need a good locksmith.

Penny: See, that wasn't so bad. He even picked up the check.
Leonard: Yeah. Although, when he was trying to figure out the tip, I'm pretty sure I saw smoke coming out of his ears.

Sheldon: Did you see that? He just cut the line.
Leonard: He's just joining his friends; it's fine.
Sheldon: No, it's not fine. It is a breach of line etiquette.
Howard: We're near the front of the line. We'll get in either way.
Sheldon: What if every person in front of us let someone cut?
Leonard: We'd still get in.
Sheldon: What if each of those people let someone cut?
Leonard: Still get in.
Sheldon: But then each of those people let someone cut?
Leonard: We'd still get in, but first I'd hit you over the head with his stick chair.

Leonard: I never wanted to play the cello. How do you meet girls playing the cello? Hey, you want to come over to my house and listen to me play an instrument that sounds like a suicidal bumblebee?

Howard: You look like you come with a kickstand.
Raj: You can't make me feel bad.
Howard: Hmm, maybe not. Leonard?
Leonard: So, when the aliens brought you back, they just left the probe in?

Leonard: Well, now hold on, how about this? How about we still hang out, but on the down-low?
Penny: Are you really that kind of guy?
Leonard: No. I actually felt kinda silly just saying on the down-low.

Leonard: Look, I'm still happy to drive you to work. Nothing's changed in that regard. We're still roommates. We're still friends.
Sheldon: Except you identified me, your best friend, as a gangrenous limb that needed to be severed from the organism and tossed away. The desperate act of a little man with a big Napoleon complex.
Leonard: You know what? Go put on your bus pants.

Sheldon: *knock knock knock* Dr. Wolcott? *knock knock knock* Dr. Wolcott? *knock knock knock* Dr. Wolcott? [sound of many locks clacking]
Howard: That's a lot of locks.
Leonard: Mm. That was a lot of knocks, they were made for each other.