WISKER BISCUIT Share definition Flag a wisker biscuit is a vagina/pussy. term wisker biscuit refering to,usually eating out/oral sex with a female. I like the wisker biscuit! WISKER BISCUIT by Paul K mitchell III November 8, 2004 0 0 Get merch Get the WISKER BISCUIT mug. Buy Now — $32.95 See more merch