adj. Hello! There's a dude.
Real citation: "She has some fairly powerful abandonment issues, and apparently her man-on-me fantasies have become thoroughly entangled with her fears that I will cheat on her with some dude."
(April 11, 2007, Savage Love, http://www.metrotimes.com/editorial/story.asp?id=10385)
Made-up citation: "Few wives want to hear the word 'man-on-me' in their husband's wedding vows or sleeptalking monologues."