3/4 into the movie a lawyer is speaking to his client in the interrogation room. He offers him a cigarette and inserts it into his mouth and lights it for him as the prisoner hands are handcuffed behind him. He proceeds to smoke the cigarette without using his hands, just puffing and blowing the smoke from his mouth. A few more moments into their conversation and after the cigarette is finishing he brings his hand from his left side and scratches his nose due to some tingle he had. How can you bring your hand to your nose if you are handcuffed behind your back and if able to why didn't use his hands to smoke his cigarette?