最近发现一个比较牛的网站 英语俚语大全
http://www.urbandictionary.com/
一般能想到的都有 而且还配有例子 挺牛的!
查了几个 挺有意思的

fuck up
1.Mess up, screw up, failure, mistake
    You're a total fuck up.
2.Also can be used to say shut up in a more excessive way
    Shut the fuck up!
3.A failure, someone who really messes up.
    Omg you're such a fuck up.
4.A failure at everything, total loser, unable to do anything right.
    Barry you fuck up!

fuck off
1.A message used by the hand that is a direct insult to another person.
........................./´¯/)
......................,/¯..//
.......... .........../....//
............./´¯/'...'/´¯¯`·¸
....... .../'/.../..../......./¨¯\
........('(.. .´(..´......,~/'...')
................. .........\/..../
..........''.......... ... _.·´
..........................(
..... ......................\
Nick: hey i fucked your mom last nite
James: Why dont you fuck off
2. Used in the imperative as a signal of angry dismissal.
3. To spend time idly.
4. To masturbate.
Fuck off!
5.Go away!!!!!!!!!!! AND LEAVE ME ALONE!!!!
Benny told Jimmy to "Fuck off!".

这个更强
Big Man
A male human being who does or has done something that makes them feel superior to others, or very good about themselves, even though they know that their accomplishment doesn't truly mean anything.
Just a few examples of being a Big Man include:
-Driving much faster than the person in the lane next to you
-Eating more than anyone else at a party
-Having a vanity license plate with a "cool" word
-Beating someone by a lot in a game
-Wearing sunglasses all the time
-Drinking more alcohol than someone else
-Having a "cool" nickname
-Cracking your knuckles for emphasis