Martial artists who smile before the start of a match are more likely to lose. This could be as a smile can convey fear or submissiveness.
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If martial artists smile before a martial arts tournament, it increases the likelihood of losing. Doing so can convey weakness or submissiveness.
Donkey Kong got his name because his creator believed “donkey” meant “stupid” in English and wanted to convey the impression that the character was a “Stupid Ape.”