Heh.... I had a user in my office come running to my desk a while back. She said her computer wouldn't turn on... it just kept beeping at her. I asked her what sorts of beeps... she said very quick beeps. I thought about it for a minute, and thought I must be mistaken in my assumption. Sure enough when I got to her desk... and saw her bookbag thrown ontop of the keyboard... I knew what the problem was though. Same thing you came accross, but it was a bag instead of food. She was equally mortified. I told her not to worry, it was just a PEBKAC problem, and I see lots of those. At which point she asked what PEBKAC was... when I explained it, she wished I had not. None the less, I got a laugh.
"Bad.. Good? I'm the guy with the gun"