A timeless classic that even your Dad is sure to have done in his day! After you've
swallowed your last bit of yogurt and guzzled down your carton of O.J., what's left? An empty brown
bag, of course! Don't let this natural noisemaker go to waste. Gather your lunchbag around the neck
and blow into it until it's full of air. Now twist the top closed and with your other hand slam the
bottom of the bag. Watch your table-mates jump ten feet into the air at the sound of the unexpected
explosion. Mission accomplished.
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