My pranking days are long since behind me now, but I'll never forget the time... ...when, years ago, a much younger electroshock and a buddy was standing on the second floor of a campus computer store with only Apple products (yay!). One side of the store had entire walls made of glass so you could look out towards the 'courtyard' and hallways of the building it was inside. Well, the Macs were on display right by this glass wall. Electroshock was browsing the latest products (and doing some window shopping). Bored PC buddy asks: "What's the coolest thing about THIS Mac? Electroshock, not fully paying attention, absentmindedly responds with: "Huh? Oh. Yeah, there's an easter egg -- a secret sound if you know how to trigger it 'just so'." Intrigued, PC buddy asks how to trigger it. Electroshock, being very distracted, didn't think about the full implications, and gave step-by-step directions to the PC buddy on how to trigger it then wandered away to browse more wares. PC buddy now has an evil grin on his face, and innocently appears to be examining that particular Mac. The sales staff sees this and then doesn't pay attention because it's clear he's just browsing. So they look away. Then he does the specific sequence of keys and actions needed to trigger this sound. Wow. The sound rang loud and crystal clear. In fact, it was too good because at that instant, every single store employee turned around to see the source of this sound, frozen with fear written all over their face, frantically searching for the source. After a few very pregnant moments, they suddenly realize it's from the Mac and starts breathing again. I'm sure the manager probably had to have his pants dry cleaned on the way home that night, though. Electroshock quickly looks up and realizes what's happened, and quickly hustles PC buddy out of the store before they could lynch us or call security. What happened? Well, you see... the easter egg basically triggered an hidden sound that was like glass shattering. The Apple engineers did a SUPERB job of making that sound so realistic. So when you had a Mac literally next to a huge glass wall on the second floor emitting that sound loudly... everybody there froze in fear. Next time, electroshock learned to be much more careful about revealing easter eggs to others. What's the best Mac prank -- whether intentional or not -- you've ever done?