er bai woo Share definition Flag Mandarin Chinese for someone who's mad or silly. In Cantonese Chinese, it sounds like two hundred five. Hee hee! When I used to act silly or was saying something crazy, my mom used to say, "Er bai woo". er bai woo by DelishDessert February 25, 2007 0 0 Get merch Get the er bai woo mug. Buy Now — $32.95 See more merch
