sherlock

1.a person who is clver or perceptive(nearly always sarcastic, from the fictional detective Sherlock Holmes)

2. a friend (a reference to Holmes)

That's brilliant Sherlock. I never would have guessed.

Snafu

A very connfusing or confused situation (From situation normal all fucked up)
(note: fouled may be substituted for fucked)

we seem to have a snafu on our hands

guido

a young, gaudy, and sterotypical American of Italian deccent with a macho attitude, usually living in the Northeastern states

Some sleazy guido was staring at my sister.

lurker

a person who reads the posts on a forum, message board, etc, but does not post

The guy was just another lurker with no life.

horse's ass

a stupid or obnoxious person(also a term of adress)

I refuse to be friends with a horse's ass like that.

throw one's weight around

to abuse one's power

Back then, many rulers threw thier weight around.

in the dark

ignorant, uninformed, knowing nothing

As far as politics goes, she's still in the dark.