I thought I'd heard it all, but the Office Slang site had some need ones. My faves:
Assmosis - The process by which some people seem to absorb success and advancement by kissing up to the boss rather than working hard.
CROP DUSTING - Surreptitiously farting while passing thru a cube farm, then enjoying the sounds of dismay and disgust; leads to PRAIRIE DOGGING.....
Ohnosecond - That minuscule fraction of time during which you realize you’ve just made a terrible error.
Seagull Manager - A manager who flies in, makes a lot of noise, shits over everything and then leaves.
Starter Marriage - A short-lived first marriage that ends in divorce with no kids, no property and no regrets.
Umfriend - One with whom one has a sexual relationship; as in, “this is Dale, my...um...friend.”