Top Definition
(v.) The act of giving oneself manual stimulation or pleasure via hand and penis. It is done by stroking oneself repeatedly; masturbation; jacking off.
Matt: Yo where have u been this last hour?
John: Just catching up on my reading.
Matt: Bullshit, you were probably jeffin it
John: You got me
by willemdafoe February 19, 2012

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