That's to shake up the electrons.
It's also important to bang mice on the desk if the pointer gets stuck on the screen.
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The Alchemist king of the needlessly complicated,
Mon 30 Nov 2009, 14:52,
archived)
ha ha I still do this even with my super dooper
laser mouse!
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The magic of chutney Shakes it like an Instagram filter!,
Mon 30 Nov 2009, 14:59,
archived)