That would have to be from the tech support side of things. Working long hours, in conditions where you have to ask your boss pretty please to use the restroom.
Lets face it, no one who calls tech support is ever in a good mood.
I had a caller who's plug 'n pray product wasn't working, so we needed to remove the broken item from the system files. We went on and on like this for about an hour. I even spelled it for him once. About 30 minutes later - I was called into the big bosses cublicle. He wanted to know exactly why I had instructed a customer to format his hard drive.