Mine was a few years ago, when a colleague sitting next to me started asking herself "Why isn't this working? I don't understand it! I've tried anything I can think of..."
At this point I've turned to her and asked "Well, Did you sacrifice a goat?"
BTW, she found and fixed the bug the second she started to explain the problem to me.
Top comments (4)
'Try restarting the machine/server'
Or
It works on my machine
Have you googled it?
Did you pray to Jon Skeet?
FYI: that's called "rubber duck debugging".