Re: Reverse the polarity!
"Thats where you point to the 2 pin power connector on the laptops power supply brick, let them see you unplug it, rotate it 180 degrees, plug it back in, and say you've "Reversed the polarity of the power supply, so any negative waves should now be positively charged" :D"
One problem. US power supplies tend to be polarized...if not three-pin. Both of these can only plug in ONE way. Heck, even alarm clocks are polarized these days. Tough to find a device that isn't polarized unless it's internationally-rated.