Alf mask Share definition Flag When you get down between a guy's legs and pull his scrotum up to make a mask, using his penis as the nose. Resembles Alf from the 80's tv show. I love to use Jeremy's junk as an Alf Mask and sniff his underballs. Alf mask by Feetsoup March 23, 2018 0 0 Get merch Get the Alf mask mug. Buy Now — $32.95 See more merch