"Jerk-off" originated in American English in the early–mid 20th century as a literal slang term for a person who masturbates, derived from the verb phrase "to jerk off." The expression reflects the physical motion implied in male masturbation and developed within informal, sexual slang rather than medical language. It appears in casual speech, sexual humor, and explicit contexts. While descriptive in form, it is vulgar and socially inappropriate outside informal or sexual discussion, and it is rarely neutral in tone.

英語での「jerk-off」の定義と意味

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