Jeffin' Around (To Jeff)
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!