A man walked into a supermarket with his zipper down. A lady
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 just about done shopping, a man came up and
said,

'Your fly is open.' He zipped up and finished his shopping.

At the checkout, he intentionally got in the line where the lady
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 Marine standing in there at attention?'

The lady (naturally smarter than the man) thought for a moment
and said 'No, no I didn't....... but I saw a disabled veteran sitting on a
couple of old duffel bags.'

I'm gonna have to remember that one......

Hurray for the Red, White, & Blue!!! ROFLMBO