Sumoing Share definition Flag Dancing that looks like sumo wrestling moves because of restricted movement. This is caused by Multiple layers of clothes, hats, and gloves that also add body shape. My roomate is sumoing to ODB before she goes to smoke outside on the cold porch. Sumoing by The0door January 26, 2006 0 0 Get merch Get the Sumoing mug. Buy Now — $32.95 See more merch