************* ****nut ******bag ******** piss me off.
Mean people suck. Nuff said. 
No, not nuff said. Story please. 
Rendered into normal English and somewhat condensed....
We're talking the kind of person who takes great pleasure in ordering people around, but when something needs to be done he's ******* NOWHERE to be found.

Textbook kiss-up/kick-down personality--disrespectful attitude to peers and lowers, but he knows when he has to play nice.
Heavily sarcastic manner, constant jabs and bitching. It's hard to classify--it's rarely direct insults or overt bullying, but it's just not a good vibe he sends off. Basically all around full of ****.
Technically I outrank this guy, but the way the informal food chain worked out (alpha male/beta male thing) it's basically peer-peer.
I don't let any of his jabs/mocking/belittlement get to me, cause I know he's just a dick and I could honestly care less what he thinks. But it does get annoying to have to deal with, even though more often than not I ignore his crap.
He's also a bad influence on others' behavior. Not a peacemaking influence you might say. One of those charismatic individuals that enters a well-oiled situation like a rogue star passing through a solar system, and his gravity skews the orbits of everything around him.
One thing that REALLY gets on my nerves--I hate the way I feel when he asks me to do something. It has nothing to do with the task usually--I don't mind helping out, and in normal cases I wouldn't object to whatever it is, but if I do it, it feels like I'm giving in in this ongoing contest of wills. But I can't legitimately refuse him (even though I don't have to do it if I don't feel like it)--because it's stuff that should get done, and if I refuse it makes ME look like the bad guy. And I hate being made into the enemy. It's not the task that's the problem, it's the delivery and the bad attitude that goes along with it. Smug S.O.B.
A little more information than you wanted, probably.