Top definition
Computer/Tablet/Smart Phone, etc. anything that you can stream porn with.
During my morning whack-off my Jack-Off Machine lost its internet connection.
by Daddy (*)(*) December 20, 2011
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2
A large machine in which one lays under the main body of it and a metal cylinder is placed around the pecker.And when its turned on the cylinder moves up and down and jacks you off and can be make to go extremely fast.
Guys are sometimes forced to get in it as a punishment.
He's in the Jackoff machine.
by Judge dredd7 November 08, 2011
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