manko wanko Share definition Flag Female masturbation. "Manko" means "vagina" in Japanese. "Hey, what's the matter with you, John? You look like you've just had a manko wanko splash cumshot." manko wanko by Hiroicci August 21, 2017 0 0 Get merch Get the manko wanko mug. Buy Now — $32.95 See more merch