Any person who has grey hair; Any person who spends 5 minutes stepping off a curb; Any person who can't, for crime's sake, drive faster than 25 miles per hour anywhere.
Holy Shiite! I almost ran into that dang duffer. He can't even see over the steering wheel, let alone the speedometer! Take the bus! Crime!!
by Gemilie August 15, 2006
a slang term for a woman's vagina during sexual intercourse
A guy buries his dick in a woman's duffer.
by DICKshunarie July 07, 2003