I found a container of canned air at work.  I practically emptied it into my laptop and desktop keyboard.  I held the desktop keyboard vertically and ran the air can up and down.

In doing so, I accidentally zapped my hand.  Cold!  I know the directions say not to do it, but then I did it again because it was kinda fun.  The directions are pretty clear – no shaking, no zapping skin, immediate and thorough washing of the afflicted area, and no (under any circumstances) huffing.  I didn’t inhale.