In ancient Greece, tossing an apple to a girl was a traditional proposal of marriage. Catching it meant that she accepted.
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In Saudi Arabia, a woman reportedly may divorce her husband if he does not keep her supplied with coffee.
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In Hong Kong, a betrayed wife is legally allowed to kill her adulterous husband, but may only do so with her bare hands. (The husband's lover, on the other hand, may be killed in any manner desired.)
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The Band-Aid was originally made for the inventor's wife, who often cut and burned herself while cooking.
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Raj from the Big Bang Theory is married to Miss India.
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In Japan, it is tradition for husbands to get a monthly allowance from their wives.
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