1、我去！（similar to damn it, but not that bad, you can often hear it when young people complain or dissatisfied with sth） 2、有木有！（means 有没有，是不是，but with a strong mood） 3、鸭梨。（means 压力，pressure） 4、不靠谱。（means not reliable ,not dependable 他办事不靠谱。means he often makes wrong or forget to do something ）

thank you all for your reply.

不明觉厉：虽然不明白，但是觉得很厉害——I think it is so cool, although I don't understand. But I think "授人以鱼不如授人以渔" teaching you how to get it is better to give you answers directly. I advise you using Weibo, which is similar to twitter, most popular social network in China. You can learn a lot from there.

傻逼/脑残 idiot ( offensive) 蛋疼 make sb feel sth troublesome ( 这件事真让我蛋疼，我不想做了！） 鸭梨山大 feel very stressful