Mac: [after Lindsay calls him 'Sir' various times] And don't call me "sir".

Mac: [looking down the drain] Are you good with a wrench?
Danny: [chuckling to himself] Am I good with a wrench....

Mac: [talking to Lindsay in the tiger's cage] I need you to hold the tiger's jaw so I can get the dental impression.
Danny: [whispering] Just take a deep breath. Don't let him know that you're afraid, 'cause he can sense when you're nervous.
Lindsay: The tiger's been tranquilized. I think I can handle it.
Danny: I'm talking about Mac. And make sure you call him "sir."

Mac: [to Flack] Hey, you're sneezing on my crime scene.

Mac: [to Stella] I love the smell of a cover-up in the afternoon, don't you?

Mac: [walks into the lab to see Lindsay testing products from Manhattan Minx's shower room] Do you really need all these
Lindsay: Oh, I thought you said collect everything.
Mac: No, I mean...women. Do you really need all these...products?
Lindsay: You're asking me? I work in a lab.
[about their victim]

Mac: A paranoid schizophrenic's worst nightmare.
Stella: He doesn't just think we're out to get him. We are.

Mac: Aiden's on rodent patrol, I'm waiting to do a rat-topsy.
Stella: Rape and rats. Worlds apart.

Mac: Ali didn't just lie about the GHB, she lied about when she was beaten, too.
Lindsay: Mac, she's lying about everything.

Mac: And what was the kid's name?
Landlord: [Shrugs] Kid.

Mac: And you're sure this came from Hummel's gun?
Danny: Absolutely. He doesn't deny discharging his weapon.
Mac: But ... ?
Danny: If Marvin's story is true about what happened, and he was shooting at the bad guys -- this bullet discharged from his gun and stopped midair and then turned left and then hit the pillar.

Mac: Dana Melton changed her name to Odessa and moved from Boston to Manhattan to start a new life. Baxter followed her here, started stalking her again, but this time, instead of turning to law enforcement for help, she took matters into her own hands.
Stella: She killed him and I taught her how.

Mac: Danny's shift started two hours ago. You heard from him?
Lindsay: He got hit with the flu. He took some cold medicine, knocked him out. He just woke up.
Mac: Seems kind of sudden.
Lindsay: He said he felt it coming on a few days ago.
Mac: Tell him to get better. Make sure you don't catch what he's got.

Mac: Det. Angell is working this case until IA is finished with their enquiry.
Danny: Enquiry? Is that what they're calling it?
Stella: They can't possibly think that Flack's responsible for Todd Fleming's death. I mean, he is so by the book. He doesn't even swear.

Mac: Don. Everything okay with you?
Flack: Yeah, I'm fine.
Mac: I'm not convinced.
Flack: Why do you need to be? Did I do something wrong?
Mac: It's what you didn't do. It could have got you killed.
Flack: Am I being second-guessed for not killing someone? I thought that was a good thing.
Mac: It is, if it was a choice. People are concerned about you, Don.
Flack: Tell people I said thanks, but I can take care of myself.
Mac: I wish that was true. If it wasn't for Lindsay saving your ass today, we might be having this conversation in an emergency room, or maybe not at all.
Flack: Unless you want to make that official, I got nothing else to say.