When i was younger i worked at burger king usually in the drivethrough counter. A customer made me extremely furious through the intercom and i repeatedly slammed my fists on the cash drawer, which happend to reset the Windows Based thin client that we took orders through and produced a BSOD, effectivly shutting down the Drive Through at peak lunch rush.
...I got to take orders by hand...
...With a very POed Store manager bagging my orders...
fun.