bitflipper
I heard this joke on Prairie Home Companion last week...this is a somewhat abbreviated version.
Guy is led to the guillotine, but the mechanism fails, the blade doesn't drop. He is let go. Another guy's turn, same thing happens and he's let go. Third guy is an engineer. Lays down on the machine, looks up and says "hey, I think I see your problem".
I think As a service technician I would proclaim inarticulately:
"I'm not getting in that dang thing till you guy's fix it!"