[user5994461]

Remove all priority levels.

Put a checkbox. "This is an emergency". People are suddently less likely to click it.

And anyway, if it really were, they'd have called so it still doesn't matter but it makes them happy :D

[msiebuhr]

I worked at place with such a button. Neat caveat: only VP's could unchecked it...

(And I managed to check it within my first month there. My boss kindly let me know the difference between a client saying emergency and a VP saying so....)

[15thandwhatever]

I've seen where through general abuse and repeated, early dismissal of bug reports, people are extremely reluctant to call anything an emergency ... even actual emergencies.