1
general::
Phrase(s): jerk something off (of) someone or something [and] jerk something off
to snatch or quickly pull something off someone or something. (Of is usually retained before pronouns.) • Alice jerked the top off the box and poured out the contents. • She jerked off the box top., Phrase(s): jerk something off
Go to jerk something off (of) someone or something and jerk something off
McGrawhill's American Idioms And Phrasal Verbs
2
general::
Also, jack off. Masturbate, as in His roomate was always jerking off. [Vulgar slang; first half of 1900s]
American Heritage Idioms