Luckily, I don't get these types of questions, but if I ever do, I go with the most ridiculous response possible. For example, tell him that when you murder, you like to do it with your hands...makes it feel more personal. Good for cutting out those organs you're going to eat, too.
Stupid f'ing questions deserve stupid f'ing answers. Period.
Stupid f'ing questions deserve stupid f'ing answers. Period.