A man walked into a supermarket with his zipper down. A lady cashier
up to him and said, "Your barracks door is open.
This is not a phrase men normally use, so he went away looking a bit
puzzled. When he was about done shopping, a man came up to him and says,
"Your fly is open." He zipped up and finished his shopping.
He then intentionally got in the line to check out where the lady was that
told him about his "barracks door." He was planning to have a little fun
When he reached her counter he said, "When you saw my barracks door open,
did you see a soldier in there at attention ?"
The lady (being smarter than the man) thought for a moment and said, "No,
I didn't. All I saw was a disabled veteran sitting on two duffel bags."