i used to do tech support for a large pc manufacturer, so i've obviously had to speak to a large number of dumbasses, but one in particular stands out.
the man called up, complaining that the phone jack on his pc's modem was too small to plug the phone line in. i pull up his sys's specs, and it's just a normal 56k modem in his sys, so i suggest that he's trying to plug in an ethernet line. nope, he insists, it's a regular phone line. after extensive head scratching, i go into the companies parts database, and pull up a photo of the modem in question. instead of the typical labels in the metal next to the jacks, this one had little green stickers next to them:one showing a black silhouette of a phone, and the other a black silhouette of a phone jack. that's right, he was trying to plug the line into THE STICKER, instead of the perfectly normal, obvious jack right next to it.