A man walked into a supermarket with his zip down. A woman cashier walked up to him and said, "Your barracks door is open." Not a phrase that men normally use, he went on his way looking a bit puzzled. When he was about finished shopping, a man came up and said, "Your fly's open." He zipped up and finished his shopping. At the checkout, he intentionally queued where the woman was that told him about his "barracks door." He was planning to have a little fun with her, so when he reached the counter he said, "When you saw my barracks door open, did you see a matelot standing at attention in there?" The lady woman thought for a moment and said, "No, no I didn't. All I saw was a disabled veteran sitting on a couple of old kit bags".