From the Shark Tank:
PC goes bad, so support pilot fish shifts user for a few days to the cubicle of someone who's on vacation. Next morning, fish gets a frantic call: User says his mouse has exploded! "It hadn't so much exploded as it had kind of melted," fish reports when he sees it. "It spent the night on the desk owner's USB-powered coffee-warming hot plate -- which the user had mistaken for a mouse pad."
I read these stories day after day and I doubt them not a bit. Computer users are, as a rule, pretty stupid.