Hey Jeffin, how are you doing?
by Jeffin itself. October 24, 2018

by BAKL June 11, 2003

(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
John: Just catching up on my reading.
Matt: Bullshit, you were probably jeffin it
John: You got me
by willemdafoe April 25, 2012

by bxnzi July 19, 2016

To hang around the Pennsauken track team and have your colon ruptured by them several times. Also, to be hated by one's father simultaneously. In another sense, the colon the ruptred is ruptured by the Terminator - see "industrial steel colon".
Look at the douche, he's Jeffin' around (to jeff), he's gonna have to be in the hospital for a rectal doctor for 3 months!
by dbsb June 6, 2011

A snakey mother fucker who’s aspirations are to become a doctor. He is the type of person to leave his friends for some white girls in the same school or college. Overall his attitude stinks🤢🤮🤧
by Amy Thomas October 16, 2018

by Rtx gordon November 24, 2021
