inserting one's hand into one's pants and rubbing their genitals prior to greeting a fellow homie, player, bitch, or ho by the shaking or slapping of hands
oscar: dude who was that
kevin: oh that was that bitch fred
oscar: didn't he steal your fries last tuesady?
kevin: yeah
oscar: what did you do about it?
keving: before we shook hands i slipped the johnny
oscar: dude youre a fucking tard
by steven bobeven April 1, 2005
Get the slipping the johnny mug.