Oh No You Didn't!
When your victim is away from his or her desk, do a Google-search for something embarrassing and leave the results displayed on the desktop for all to see.
Unattached
Unplug the keyboard and/or mouse from the PC.
They're Gonna Die>> NEW <<
Do an image search online for "blue screen of death" and set that image as the screen saver on the victim's computer. That'll give them a real scare!
You've Got Mail
Change the victim's e-mail alert sound to something annoying and turn the volume up really loud on your victim's computer. Then send them an e-mail.
Start 'Em Up
Change the "start up" sound on your victim's computer to something funny or embarrassing. Make sure the volume is turned up all the way when he or she arrives to work.
Document Panic>> NEW <<
Has your victim been working on an important document on their computer? Carefully hide the document in a safe place, then create a fake document with the same name. Fill the document with gobbledy-gook or a funny story. At the bottom put "April Fool's!"
Embarrassing Find>> NEW <<
Sneak onto your victim's computer and do a Google search for something really embarrassing (hemorrhoids, butt pimples, etc.). Leave the results window open for all to see!
Submitted by Dorie
Hurry Up
Change the cursor on the victim's computer. Go to Start->Settings->Control Panel->Mouse, and select the "Pointers" tab. Then change the cursor to the hourglass image. Now the victim will think their computer is stuck on a task endlessly.