Metaphors are a lot like other things

You have never touched anything in your life. Not one thing. Not really. You see, when your hand goes to grasp a pencil, or a fork, or a sawn-off shotgun, you trap a layer of air molecules between the atoms of your skin and the atoms of the fork, or pencil, or pistol. There's nitrogen and oxygen and traces of argon between you and the world. You have never touched anything in your life. Not one thing. Not really.

But, and I want to stress, I mean this with complete sincerity, if you 'touch' my favourite mug again, I will end you.