A client of mine wanted to speed up their computer, so I advised him to purchase some additional RAM. He insisted he could install it (when it arrived in the mail), so I wrote down the instructions as clearly as possible for him.
A few days later:
client: "The memory that you told me to buy doesn't work!"
me: "Did you follow my directions to install it?"
client: "Yeah. Now the fucker won't turn on."
me: "What happened after you tried to turn it back on after putting the stick in?"
client: "It just didn't work. I opened the side of the case like you showed me, and put it in just like you said and BOOM! The son-of-a-bitch just turned off. Just like that. And it won't turn back on."
me: "You put the memory in while the computer was still on?"
client: "Well, yeah. Was I supposed to turn it off?"
Amazing.
-- bcohea
http://www.clientcopia.com/view.php?id=314&view=1