"Potty mouth" is an informal English slang term that likely emerged in the mid-20th century, combining "potty" (a childish term for toilet or excrement) with "mouth" to describe a person who swears excessively or uses coarse, vulgar language. The term uses playful, metaphorical imagery to link speech with something considered dirty or improper. It is commonly used in informal conversation, parenting, and humor to criticize foul language, often in a teasing or mildly disapproving way. The term is mildly derogatory but generally not deeply offensive, emphasizing habit rather than moral failing.

英語での「potty mouth」の定義と意味

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