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Old 06-11-2019, 02:45 AM
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TokyoBayer is online now
Join Date: Oct 2003
Location: Taiwan
Posts: 10,515
After you drink the first bottle of water, fill with sea water and turn it upside down.

If the draining water rotates clockwise, you are in the northern hemisphere. If it rotates counterclockwise, you are in the Southern Hemisphere.

If it can’t drain because the water can’t decide which way to rotate, you are either exactly in the equator to within feet, or you are starring in the Truman Show.