Ein paar Sachen sind wirklich super...
Tech Support: "Ok, now click your left mouse button."
Customer: (silence) "But I only have one mouse."
One lady, in an Excel class, was having a terrible time with the mouse until the instructor noticed that she was literally pointing with her finger and clicking the mouse.
Okay, die Sachen sind sicher schon ein paar Jährchen alt, aber lustig sind sie trotzdem nochSeveral years ago I was at a computer show demoing software. The audience was comprised of retired school teachers. I explained how to use the mouse to point to things on the screen. As I walked around the room making sure everyone was doing ok, I saw one woman holding her mouse to the Mac's monitor moving the mouse around on the screen.

EDIT: Okay, das kann zumindest nicht allzu alt sein:
Customer: "My mouse doesn't work any more."
Tech Support: "Is it an optical or ball mouse?"
Customer: "Huh?"
Tech Support: "Does it have a ball or light?"
Customer: "It has an light on top."
Tech Support: "On top?"
Customer: "Yeah. It was underneath before, but it looks better when it's on top."
Tech Support: "Ok, try turning it around so the light points down on the desk."
Customer: "Oh! It works!"
EDIT 2: LOOL das muß ich gleich auch hier noch featuren

While training over the phone I heard, "Oh, wait. Uh oh!!" I asked repeatedly, "What? What's happening?" expecting to hear smoke was pouring out of her computer.
Finally she recovered enough to scream, "My keyboard's in the way! I can't move my mouse!"
EDIT 3: Ich dachte das bei EDIT 2 wäre schon das geilste, aber das ALLERBESTE ist wohl das hier:
My boss had recently learned how to use spreadsheet software. He proudly called me into his office to show me a new trick he'd learned. At one point during his demonstration he was moving his mouse toward himself, and it reached the edge of his desk. I watched in amazement as he deftly rolled his mouse around the edge of the desk and underneath.
I stifled my giggling and politely said, "You know, you don't need to do that with the mouse."
Whereupon he took offense and said, "I know. I usually grab a book and put it next to the desk and roll the mouse onto it, but I just can't reach my books right now."
I said, "Yeah, that's what I do," and excused myself before I broke a rib trying not to laugh.
EDIT 4: Okay ich bin noch nicht ganz durch und ich werd jetzt auch nicht mehr dauernd editieren, es ist einfach zu viel geiles Zeug dabei... aber den Hammer schlechthin muß ich einfach noch hinzufügen

A few years ago my cousin came home to find about six mouse pads lying around the house, one in the corner of each room.
When he asked my aunt why, she told him she had gone down to the shops and seen them on sale, so she bought some. But she couldn't work out how the mice's feet stuck to them, because they didn't feel that sticky.