Fu man Chu Share definition Flag When a guy blows his load on a girls face (specifically on the upper lip) and it drips down on either side of the girl's mouth. Did you see that guy blast on that chick's face?He totally "fu man chu - ed" her Fu man Chu by sperm donorz February 20, 2011 0 0 Get merch Get the Fu man Chu mug. Buy Now — $32.95 See more merch