Our Hong Kong office had a computer that was infected with a virus. Supposedly they had run antivirus software several times and had been unable to clean it, even after updating their virus definitions.
I was asked to diagnose and fix the computer immediately, because it wouldn't even turn on.
Me: "Sure thing. When do you want me to fly over?"
Him: "Can't you do it from there?"
Me: "Sure, just ship it to me."
Him: "No, I mean can't you just fix it here, from there?"
Me: "Uh... how exactly would you like me to do that?"
Him: "I don't know. You're the expert!"