Once had a user manually change their ticket to Priority 1, which we used to indicate dozens of people/everyone down, because their M key only worked half the time they pressed it.
That's actually something I'm quite grateful for where I work. The CEO isn't a complete pain in the arse.
He's actually so normal and kind of quiet when he calls up that we had to put a special tag on his account so that would flash up that he is the CEO, because from the way he conducts himself on the phone you'd assume he was just an employee.