Sergeant Jeffords: I still think it was Amy.
Amy: Obviously I'm being framed, probably by whomever keeps accusing me.
Captain Holt: No one's asking the obvious question. Why did Scully open a package on Peralta's desk? Perhaps he was setting up the prank, and it blew up in his face.
[All murmuring in agreement]
Scully: No, I just saw a box and I thought, "Oh, cookies come in boxes."
[All murmuring in agreement]