Taiwanese Thumb War Share definition Flag When a woman has one man fist her vagina and another fist her ass and they have a thumb war inside of her. Jeff: Dude, Molly's so loose you can do a Taiwanese Thumb War with her.Dan: That's grody. Taiwanese Thumb War by Johnny Five-O February 15, 2012 0 0 Get merch Get the Taiwanese Thumb War mug. Buy Now — $32.95 See more merch