Smiffer Share definition Flag One caught in the act of sniffing womans chair or seat. Hey donovan I caught your dirty uncle smelling girls bicicyle seats at the flea market again today, he is a dirty old smiffer Smiffer by IB Dohf December 18, 2008 0 0 Get merch Get the Smiffer mug. Buy Now — $32.95 See more merch