Man-jumper Share definition Flag A fickle person (whether female or male) who jumps from man to man within a small timeframe. Erin watched as her best friend, Lynn, changed boyfriends 3 times within the month. She came to the decision that Lynn was a man-jumper. Man-jumper by Viega February 28, 2010 0 0 Get merch Get the Man-jumper mug. Buy Now — $32.95 See more merch