A mate of mine is married to one of the experts on the Antiques Roadshow. He sent me this yesterday:
Last Saturday, she was there when the BBC were recording an edition of Antiques Roadshow at Ascot racecourse.  At one point a large scruffy-looking bloke appeared and took out from a plastic bag an unusual antique match-striker.  The following conversation then occurred:
 
x:  Oh, that’s interesting.  Where did you find it?
 
Man:  Well, I was digging in a pig sty, and had got down about five feet when…
 
x:  A pig sty!?  Are you a farmer?
 
Man (looking puzzled):  No.  I was just digging in a pig sty, as you do….