Aria, verbatim and to her credit: "...Possibly."
Emily: "Wait, so it wasn't there before first period and the only person that knows we didn't do it was Meredith, who was holding us hostage? Great, see you in jail!"
Couple things. Number one, fuckin' jail? It's not like you found a shovel, it was just a brain. There is not a huge problem with just a brain. And second of all, why would anybody think you did that? Because she stalked and tried to murder you? Granted, that's compelling, but also: Everybody in Civics class saw you in class, learning about the checks and balances. And Mona was with you the entire time. So even if brain-leaving were a jailable offense, you idiot, you'd still need Mona to press charges. I just don't...
Aria, reflecting: "Gotta say though, Mona's a lot stronger than me. I would've lost it. I feel sorry for her."
Everybody: "Me too. Brains."
Spencer: "Shut the fuck up, you feel sorry for her. Hanna's not even here to cosign that bullshit. Pull your ass together."
Liars: "Yes ma'am."
I feel like there was more, but that's when Mona comes in with this incredibly funny, goony look on her face. I get what she's portraying, but it's hilarious to see. And can I just say that a knife in a brain is nothing after that time A sent Emily that necklace of Alison's corpse's teeth. I want you to think about that, all the time. Especially when shit like this goes down: At the very least it was not a message written on human teeth.
Liars: "You know we didn't do that, right?"
Mona: "Of course not! After everything I've done for you?"
Emily: "The fuck?"
Mona: "I helped you figure out who killed your girlfriend. Which saved another girlfriend from getting killed by the same dude, and also you. The only person I didn't save was Caleb (as usual), and even he got better immediately."
Liars: "We are trying very hard to figure out a reason to shit on that! But you think too fast because of your hyperreality!"
Mona: "Look. There's still bad blood between us. I know that I have to earn your trust, and prove that I'm worthy. And I will. (Using explosions!) You'll see, I'm better now."
She bounces, and they all just shiver and feel a multitude of freakouts. Where's your checks and balances now?
Caleb: "Hanna, why are you talking to me in public?"