There are actually seven different types of twins: Identical, Fraternal, Mirror-Image, Polar Body (Half Identical), Mixed Chromosome, Superfecundation, and Superfetation.
20
The Japanese commonly put ketchup on their rice.
16
On average a woman has 4 sexual partners in her lifetime.
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Approximately one-third of the population can't snap their fingers!
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Americans did not commonly use forks until after the Civil War.
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