foushi Share definition Flag short hand way of saying "I swear to God." Me: I foushi I didn't tell him that you like what's-his-face.Her: Okay...Me:Wanna get a smoothie?Her: Hells, yeah! foushi by Buggeezy May 30, 2009 0 0 Get merch Get the foushi mug. Buy Now — $32.95 See more merch