Swing Hangover Share definition Flag When seated on a swing, the fat that hangs out over the swings seat originating from the thighs and butt. Person 1: I need to loose some weight, I have a Swing Hangover. Swing Hangover by Needle Nose March 17, 2009 0 0 Get merch Get the Swing Hangover mug. Buy Now — $32.95 See more merch