Howard: Emergency drill night last night, huh?
Leonard: Uh-huh.
Raj: How'd you do?
Sheldon: I'll tell you exactly how he did. Readiness: unsatisfactory. Follows direction: barely. Attitude: a little too much. Overall: not only will he probably die in a fiery inferno, his incessant whining would most certainly spoil everyone else's day.

Leonard: You know what, I'm so tired I can't even think straight. I'm going home. Will one of you guys give this nutbag a ride back later?
Sheldon: You can't go home. You have to take me to the dentist at four o'clock.
Leonard: Oh, can't you take the bus to the dentist?
Sheldon: Of course I can. It's coming back under the residual effects of the anesthesia, that's the problem. Two years ago after a deep gum cleaning, I thought I got on a bus but somehow wound up on a booze cruise to Mexico.
Raj: They put you under for a cleaning?
Sheldon: Yeah, they have to, I'm a biter.

Leonard: Whatever, Sheldon. I'm exhausted. I'm not taking you to the dentist.
Sheldon: Wrong, sir. Wrong. Under section 37B of the roommate agreement, miscellaneous duties, you are obligated to take me to the dentist. See? It's right here after providing a confirmation sniff on questionable dairy products.
Leonard: You know what, I am sick of the roommate agreement. It's ridiculous. I'm your roommate, not your chauffeur. You know, I had better things to do yesterday than drive you all the way to the good model train store in Garden Grove because the one in Pasadena has gotten too big for its britches.
Sheldon: Well, it has. Ask anybody.

Sheldon: Hello, Stuart.
Stuart: Oh, hey, Sheldon. Can I help you find something today?
Sheldon: No, no. I was just sitting at home thinking about how it might be nice to catch up with my ninth favorite person.
Stuart: Ninth?
Sheldon: You moved up one. My pen pal in Somalia was kidnapped by pirates.

Sheldon: On a cheerier note, I have a teeth-cleaning appointment this afternoon. What do you say you take me over there, buddy boy?
Stuart: I'm sorry, you want me to take you to the dentist?
Sheldon: Yes. And now, I can't make any promises, but that's the sort of thing that gets a fella on the short list for the number eight friend slot.
Stuart: Sheldon, I'm working. I can't take you to the dentist. Also, and I can't stress this enough, I don't want to take you to the dentist.
Sheldon: Can't help a friend out in a time of need, huh? I see where your therapist was coming from.

Leonard: Hey, did you ever make it to the dentist?
Sheldon: Not necessary. No. I found a service that'll send a van to your house for a teeth cleaning. Mostly they cater to dogs, but the fellow on the phone seemed to have an open mind.

Sheldon: Are you suggesting that you've come to your senses and wish to re-establish the mutual benefits that stem from full participation in the roommate agreement?
Leonard: Absolutely. If you admit that you're a 30-year-old man who's incapable of functioning on his own.
Raj: Ooh, Sock Mouth's got him on the ropes.
Sheldon: I will admit nothing of the sort. And now if you'll excuse me, I have to call my dentist and see if I can also get my hair shampooed and my nails clipped.

Sheldon: Power failure. Implementing power-failure protocol.
Leonard: What happened to all your glow-in-the-dark-emergency-exit stuff you had painted on the floor?
Sheldon: Oh, that was wildly carcinogenic. Anyway, it's too bad you’re no longer entitled to the full benefits of my friendship, because I happen to be extremely prepared for such an emergency. Please try not to see anything by this light. It's not for you.
Leonard: It's just a blackout, I'm sure the power will be back on soon.
Sheldon: And I'm sure some fool in the Donner party said the snow would stop any day now. I like to think they ate him first.

Sheldon: Excuse me, Leonard.
Leonard: Since when don’t you knock? It's like the only good thing about you.
Sheldon: Social niceties have been suspended, Leonard. We're in a state of a emergency. The world has descended into darkened turmoil. Lawlessness and savagery are the order of the day.

Leonard: Fine, what is it?
Sheldon: I'm making s'mores. I wanted to alert you in case you smelled caramelizing marshmallows and thought a nearby candy factory was on fire.
Leonard: S'mores, huh? Good for you.
Sheldon: Yes, or good for us if you sign here and reinstate the full roommate agreement.
Leonard: No, thanks. I'm good.
Sheldon: Really? Huh! Okay. In that case, I will have a s'more by myself. And then I'm gonna have s'more. By myself.

Sheldon: Counter-proposal. We reinstate the full roommate agreement with the following addendum, in the spirit of Mother's Day or Father's Day, once a year, we set aside day to celebrate all your contributions to my life, both actual and imagined by you. We could call it Leonard's Day.
Leonard: I kind of like the sound of that.
Sheldon: Of course you do. It's about you, like everything else. [lights come back on] Oh, thank goodness. I don't think I had it in me to make another glass of water.
Leonard: So, do I get breakfast in bed on Leonard's Day?
Sheldon: No.
Leonard: Can I sit in your spot?
Sheldon: No.
Leonard: Can I control the thermostat?
Sheldon: No.
Leonard: Do I get a card?
Sheldon: Of course you get a card. It's Leonard's Day.

Penny: Hey, guys, the building manager said the reason the power went out is someone went down into the basement and just pulled the main breaker switch.
Leonard: Really. Who do you think did that, Sheldon?
Sheldon: Oh, I don't know. But whoever that mystery man was, you should be eternally grateful, for without him, there would be no Leonard's Day.
Penny: Leonard's Day?
Sheldon: Oh, no pressure. Just get him a crummy card, you're good.

Sheldon: Now, today's episode of 'Fun with Flags' is not fun, but it is important. Flags: You gotta know how to hold 'em, you gotta know how to fold 'em.

Sheldon: I know he (Spock) wouldn't care for an outburst of human emotion, but oh goodie, oh goodie, oh goodie!

Leonard: You feel like trying something new for dinner? Maybe Indian, Tex-Mex?
Sheldon: You ever wonder how humans would be different if they evolved from lizards instead of mammals?
Leonard: Okay, let's talk about that.
Sheldon: As you know, lizards, cold-blooded animals, lack the ability to sense temperature. But they do move more sluggishly when it's cold. So, lizard weathermen would say things like, bring a sweater, it's slow outside. I love my mind.
Leonard: We all do. Now, how about dinner?
Sheldon: Oh, I would assume we'd enjoy insects or smaller lizards. We could also pull each other's tails off and grill them, they'll just grow back.