yiu fai Share definition Flag A chinese guy, usually with extremely straight hair, who rides the Faraz Wheel. A "yiu fai" usually smokes monkey pole, but is known to be neither straight, nor gay, nor bisexual. Hey yiu fai, your hair may be straight but you aren't. yiu fai by Matt August 5, 2003 0 0 Get merch Get the yiu fai mug. Buy Now — $32.95 See more merch