Here's what Mike says...
'Let me introduce you to the Paparazzi Fuzz.. Picture the scene and stay focused.. There I was, in the chocolate aisle, when I caught sight of this tin.. an idea developed.. the fudge that it once contained was gone in a... flash.. and I thought I'd give my idea a shot.
From fudge to fuzz.. The circuit now inside this tin is based on the D.A.M Meathead Fuzz and uses 2n3904 & BC182L transistors.'
Please note - hand operate switch only to avoid damge to the tin.