6. Blair: The point is, enough of this high school nonsense. Nelly or no Nelly, who cares? I have enough going on already.

I have enough going on already: 我已经够烦的了

7. Serea: Blair, it's Chuck. He's somewhere blowing off steam. It's what he does. He'll show up in a couple days minus a few million brain cells and some liver tissue.

blow off steam: 发挥多余的精力。后面那句是暗示他喝很多酒，所以脑细胞跟肝脏都有损伤。

8. Penelope: Daddy? I need you to call headmistress Queller. There's a girl bullying me.

bully: 欺负，经常用在学校里，指恃强凌弱

9. Chuck: That's the problem with an open invitation. You can't keep out the hoi polloi.
Dan: What do you know about my Dad and Lily?
Chuck: So the cat's out of the bag.

open invitation: 没有正式的邀请函，客人可以自己决定到达的时间，也不限制客人的身份。如果有人对你说Please drop by again. You have our open invitation. 意思是下次欢迎你随时 造访，不必预约。另外有个open bar，通常指那些婚礼、宴会上的吧台服务，酒水是免费的。用在酒吧里，open bar表示买一张门票就可以无限畅饮的意思。
hoi polloi: 民众，大众
(let) the cat's out of the bag: 揭露一个秘密，尤其是很重要，很关键的秘密