Everyone knows how to hum. (No, no, get your heads out of the gutter you dirty readers) But did you know that it is impossible for left handed people to hum while holding their nose closed with the left hand. And it is impossible for right handed people to hum while holding their nose with the right hand.
Go ahead, I'll wait for you.
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By the way, it doesn't matter what hand you use.
LURKING ON THE GRASSY KNOLL
