Enigmatically droll comedian Tim Key is in Edinburgh with his show Single White Slut, and he's answered your questions " from what it was like being trussed in tinfoil for the Alan Partridge movie to considering wrestling with Shaun Murphy on a snooker table onstage in Sheffield 2.31pm BST And with that, Tim heads off into the Fringe. His show Single White Slut is at the Grand until Monday 25 August " thanks to him a…