The marketing department is right next door to my office, and to make room for their new intern, a very high end, large, and noisy printer was 'temporarily' placed in my office. I'm a reasonable person though, and didn't mind this. The salespeople figured out that it makes commercial grade printouts, so for their various presentations and whatnot, they'll print enormous numbers of pages on this thing, and basically use my office as a motherfucking water-cooler. After a few weeks of this, I logged into the printer from my computer, and set it to disallow all connections from MAC addresses other than those in the marketing department, who print far less material on their own, special, dedicated printer. Absolute fucking chaos ensued. Grown men were brought to tears, ultimatums were made, and blood was shed. The hardware guys were down here for over an hour, making up absolute bullshit as to why it wasn't working(which really surprised me).

Long story short, cut off access to printer, sit back and watch the true face of humanity emerge. Seriously, fuck those guys. They have their own goddamn printer.