jack off

• J-O, J/O (abbreviation)

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jack off (third-person singular simple present jacks off, present participle jacking off, simple past and past participle jacked off) (chiefly Canada, US)

1. (transitive, intransitive or reflexive, colloquial, vulgar, transitive usually followed by "to") To masturbate, usually as a male.

   Synonyms: jerk off; see also Thesaurus:masturbate

   • 1962 [1959], William S. Burroughs, Naked Lunch, New York: Grove Press, page 81:

     Two boys jacking off under railroad bridge. The train shakes through their bodies, ejaculates them, fades with distant whistle.

2. (transitive, colloquial, vulgar) To manually stimulate another person's penis.
3. (informal, derogatory) To stimulate or please oneself in an unproductive or idle way.

• jackoff (noun)

jack off (plural jack offs)

1. Nonstandard spelling of jackoff (“a jerkoff”).