Wangan Slipstream Share definition Flag To ram someone in the ass really fast. "-I gave my wife a Wangan Slipstream last night, she won't shit right for a week!" Wangan Slipstream by Robloxusedtobegooddamnit July 11, 2019 0 0 Get merch Get the Wangan Slipstream mug. Buy Now — $32.95 See more merch