Put tape over the optical sensor of someone's mouse.
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Hide all of the desktop icons on someone's computer and replace the monitor's wallpaper with a screen-shot of their desktop.
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Install the Blue Screen of Death screen-saver on someone's computer.
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Pull on a coworker is to press ctrl+print screen on their workstation, then paste it into Paint, save the pic, and set it as the desktop background.
Move all of their icons to the trash.
When they get back to their desk, clicking won't accomplish anything!
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Q: Does your mum like shopping on the Internet?
A: No, the trolley keeps rolling off the top of the computer.
Take a squirt gun into the rest room stall next to someone and shoot little drops over the wall every couple of seconds while pretending to pee.
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Write a message on an upside-down paper cup that alludes to something horrible being trapped under it.
Leave it on a coworker's desk or in a conference room.
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A computer programmer happens across a frog in the road.
The frog pipes up, "I'm really a beautiful princess and if you kiss me, I'll stay with you for a week".
The programmer shrugs his shoulders and puts the frog in his pocket.
A few minutes later, the frog says "OK, OK, if you kiss me, I'll give you great sex for a week".
The programmer nods and puts the frog back in his pocket.
A few minutes later, "Turn me back into a princess and I'll give you great sex for a whole year!"
The programmer smiles and walks on.
Finally, the frog says, "What's wrong with you? I've promised you great sex for a year from a beautiful princess and you won't even kiss a frog?"
"I'm a programmer," he replies.
"I don't have time for sex.But a talking frog is pretty neat."
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Chuck Norris can access the internet from a walkie talkie.
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Hide an alarm clock in someone's bedroom and set it for 3:00 a.m.
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