Anal Dandruff Share definition Flag The small scraps of toilet paper left behind after wiping your butt. I was looking at my backside in a mirror and noticed I had anal dandruff from the lousy toilet paper I used at my grandmas house. Anal Dandruff by SayHuh?? June 22, 2011 0 0 Get merch Get the Anal Dandruff mug. Buy Now — $32.95 See more merch