April Idiots' Day

I hate April Fools' Day. I really do. I like bullshitting, I know, but I hate practical jokes. Reading through the comments on Scott Adams's suggestions, I'm just appalled. Things that make people look a little silly for a minute, OK, maybe--swapping the contents of two boxes of cereal at home, that's harmless, that's perhaps mildly funny. But things like...

• Specifically, it requires someone with two identical phones on their desk - simply switch the handsets. When they "answer" the phone that's ringing, all they hear is the dial-tone, and as they're muttering and replace the handset, they cut the caller off.
• Some of my coworkers had at one time managed to switch the screen saver of another coworker to the windows 'It is now safe to shut off your computer' screen. Every time this guy would get up and leave his workstation for 10 minutes or so, he would come back to this message, groan about idiot technology, and reboot his computer. It took several such reboots and the repeated frustration of lost work before he cottoned on.

...and various other standard tech jokes (swapping the keys on someone's keyboard, etc. etc.)

How the hell, exactly, is it funny to disrupt someone's work? To force them to reboot their computer and lose their work, or to cut off someone who's calling them, or the like?

I think, ultimately, my favorite joke on the page, the one that really captures the spirit of the day for me, is:

• Find the co-worker that everyone hates. Go into her cubicle, stand behind her chair and say, "I'm having a hard time pulling up the forecast data sheet. Can you get into it?" When she turns to her computer, club her over the head repeatedly with a heavy, blunt object. Remember to hit her hard and often enough that she doesn't remember what happened when she comes to.