Captain Holt: Interesting, you two are sure you want to be involved with this?
Rosa: Investigating O'Sullivan? Yeah, that dude sucks. He tried to blackmail me.
[flashback:]
Frank O'Sullivan: If you don't stop harassing my officers, I will release proof that you are bisexual.
Rosa: Already came out.
Frank O'Sullivan: Oh, come on. You can't blackmail anyone anymore.

Rosa: I want to say a few words. When Jason died seven days ago, I didn't give a rat's ass.
Charles: This is your speech?
Rosa: 'Cause I didn't understand why people care so much about their dumb dogs till I got a dumb dog myself. I've only had Arlo for a day and a half, but if anything happened to him, I would kill everyone in this room and then myself.
Gina: Very violent eulogy, I like it.

Rosa: Hey, you should run. Going to meetings, writing stuff down. You love that nerd stuff.
Amy: Writing stuff down is nerdy? What do you do?
Rosa: I just forget stuff like a cool person.

Sergeant Jeffords: Wait, is that a smile I see?
Rosa: Possibly. My immune system is too weak to fight off my smile muscles.

Charles: Really never seen Speed, sir? Keanu Reeves, Sandy Bullock, Jeff Daniels at the height of his sexual powers?

Charles: Uh-oh, I know that strut. Little hip swing, playful butt bounce... Somebody made a collar!
Jake: Not loving you talking about my butt bounce, but, also, hell, yeah, someone collared a big dog!
Charles: Woof, woof!

Rosa: So you lost a Speed That sucks. At least you didn't have a Sister Act taken from you.
[flashback:]
Captain Holt: Bracco confessed. The undercover operation is over.
Rosa: But I just got a spot in the choir.
[present:]
Jake: Wait, is that the real reason you left the force?
Rosa: It didn't help.