I used to work in technical support for a 24/7 call center. One day I got a call from an individual who asked what hours the call center was open. I told him, "The number you dialed is open 24 hours a day, 7 days a week." He responded, "Is that Eastern or Pacific time?" Wanting to end the call quickly, I said, "Uh, Pacific".
This is the best (or the worst ).
You just made my day.