Played the best prank on a co-worker's computer. SOO FUNNY!

[poc301]

I work in IT, and as such we all consider ourselves pros when it comes to computer related stuff.  I got an idea from a friend and I just pulled it on one of my coworkers and the results are so INCREDIBLY funny I had to share:

1) I took a screenshot of his background on his computer, with all icons and everything.
2) I made that image the background on his computer.
3) I moved all his icons to a temporary folder on his computer so they are hidden.
4) I allowed the hilarity to ensue!

Hhaaha, he ended up cursing a few times, he rebooted his machine about 5 times and ran a bunch of virus and malware diagnostics on it, and was generally getting frustrated beyond all measure.  I finally told him and the entire office had a laugh.

If you have someone you can do this to, I HIGHLY recommend it.  It is a lot of fun.

-Bill

[Oliwerko]

Such simple, and such a hilarious idea 

[Leon]

What's also guaranteed is when he/she's working on some important documents to pull the power cord from his monitor saying it's from his computer.

[Crimson Wizard]

Heheh, an old one but never gets too old, I guess

I remember a much more evil trick we made in school. A friend of mine told me one guy really bored him by asking for some game. So we decided to have fun. I wrote a simple DOS program on QBasic (yeah, these were DOS times) that displayed a sort of utility application window with text like "Your hard drive is being formatted, please don't reset or turn off your computer, or your HDD may receive damage", and a really slow progress bar... It even displayed a small window "Restoring system files" after completion.
Idea was friend of mine was going to change game's exe with this QBasic program.
Unfortunately I never knew what happened when he gave this to the annoing guy.

[Helme]

A common prank on LAN-parties. But still funny.

[Wonkyth]

I just make an invisible(in all ways  8) ) window that steals control.

[Crimson Wizard]

There's also this stupid joke that makes CD/DVD player tray eject and close over and over again. I read about that, scanned WinAPI documentation, found needed functions and wrote a small console app that did that. Never made a prank with this though,but I guess its possible if you make an inviisble window and put executable to Windows autorun folder 

[markbilly]

There's also this stupid joke that makes CD/DVD player tray eject and close over and over again. I read about that, scanned WinAPI documentation, found needed functions and wrote a small console app that did that. Never made a prank with this though,but I guess its possible if you make an inviisble window and put executable to Windows autorun folder 

Yeah, I think someone did that to me a high-school. The disc tray opened every time I clicked or something can't really remember but it was bloody funny!

[Radiant]

On most Mac computers, you can copy/paste the icon for "shut down computer" into the folder called "start up items". Guess what it does

[Wonkyth]

Nasty.

[Stupot]

There's also this stupid joke that makes CD/DVD player tray eject and close over and over again. I read about that, scanned WinAPI documentation, found needed functions and wrote a small console app that did that. Never made a prank with this though,but I guess its possible if you make an inviisble window and put executable to Windows autorun folder 

Yeah, I think someone did that to me a high-school. The disc tray opened every time I clicked or something can't really remember but it was bloody funny!

Yeh, I once clicked on a link to recieve a "Free Cup Holder!"... after a bit of whirring, my disc drive opened itself... I was both amused and slightly scared that I'd downloaded a virus... but it would indeed have made an excellent cup holder

[blueskirt]

Make a fake BSOD screen saver, install it on your friend's computer and watch 'em swear out loud every 10 minutes.