Korean
In Korean, mwomwomwo (뭐뭐뭐, a tripled form of 뭐, which is a short form of 무엇, the word for what) is used in casual speech. Nugunugu and eodieodi (reduplication of who and where, respectively) can be heard as well.
Hong Gildong, a male name, is commonly used as a placeholder name in instructions for filling out forms.
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