OFFICE PRANKS
-- When your computer friend has left their desk, make a screen capture (print screen) of the person's desktop (preferably with a program open). Go into Windows Paint program and paste. Save as a bmp. Load the picture as the person's background. Sit back and watch them double clicking and rebooting fruitlessly. (Note: you can also create a bmp of an entire black screen and do the same. The mouse moves, but there's nothing to click on if you hide the icons!)
I want to do this one but I don't think it'll work. No matter what image you make as your desktop background, the icons will still be visible. The background wont overlay the icons. Am I missing something? I'd appreciate any help before the end of the work day.
I was thinking that as well.
I ended up forgetting the fake mouse at home (to put into the coffee basket) and got in to work well after almost everyone else, so I didn't have time to switch the "n" and "m" on some keyboards.
There were, however, a few latecomers and I got them with the post-it note under the mouse (on the trackball or over the light). Got 3 guys with that one, it was funny.
One guy, "WTF's wrong with this mouse??" Flips it over, sees the "April Fool" sticky, and laughs.
Second guy, "Oh this is just great, bad day enough already, now my mouse won't work..." REBOOTS his computer, but has the same "problem". Almost reboots again, but finally flips over his mouse, and groans, then laughs.
Thrid guy, got in really late, must have slept in. I saw him moving and moving his mouse, round and round and round in circles. Then, you know, a "pick up, drop, and try again"? Even though it was an optical mouse, no ball - LOL! Round and round again. Then he clues in and stops...it's April Fools. Slowly turns his mouse over, and smiles.

Another one of those "you had to be there's..."