Adj. To prey on the elderly in a sexual manner. Much like a paedophile is reffered to as a 'kiddy fiddler' and offers sweets to tempt children, The Biddy Fiddler offers food stamps and money off vouchers.
Alright Trev, what you been upto? Well Barry i've been out Biddy Fiddling. Smashed the granny out of Edna on monday. Oh Trev you Biddy Fiddler!