smart, intelligent with charisma that attracts a variety of people. basically a likeable asshole.
Robert Downey Jr., Tony Stark, Christian Bale and Bill Maher are examples of jofer personified.
guy 1: I have a Korean girlfriend. She's limber. Remind me why I'm cooler than you geeks?
guy in crowd: JOFER! <shouted with anguish and pure jealousy>