buttface walrus Share definition Flag an emoticon using a colon and the number three. it looks like a walrus has a butt surgically attached to its face. guy: hey wats a buttface walrus? girl: oh its this :3 buttface walrus by kate:3:3:3 June 27, 2009 0 0 Get merch Get the buttface walrus mug. Buy Now — $32.95 See more merch