I think top nod has to go to the entire Brownie Gate scandal. The name itself (credit: Amanda), the "clean your ____" concept (credit: Ann and Eva), the way Cassie overreacted, Yaya's respeito shirt, the cookie jar song and dance, everything. And it spawned some funny lines...
ANN: "I should have written: Eat some carbs."
YAYA: "Someone had the audacity to mutilate her precious brownies."
CASSIE: (to Toccara) "It's like me sticking my hands all in your chicken breasts."
C.J., Cassie's boyfriend: "Start doing dastardly ____ around that bitch. That's some weak ass ____. Yeah, I'd have to ____ somebody up. Just be like: whoever stuck their finger in my food that's some nasty ____, and then nobody even tell me who did it, you all some sorry ____. You see what I'm saying? In a classy manner."
YAYA: "Some people think it's funny to kill people, that doesn't make it funny."
This is the kind of stuff that can't be scripted.