My b/f hails from devon, and insists on saying "a packet of crisp" instead of a packet of crispS. I heard someone else saying it last week. Is it crisps or crisp. to me one crisp, several crisps.
Is the humble crisp the only commodity for which he fails to add 's' in the plural? Or does he buy a box of match, a pack of cigarette and a couple of pint, too?
Perhaps all Devonians treat the crisp in the way in which the rest of us treat sheep, deer, fish and so on, that is with an unchanged plural form...one deer/two deer etc.