There may be a problem with being a woman instead ...

There may be a problem with being a woman instead of a man. I had some problems with my bill after my drinks and two friends drinks were put on a male friend of mine. I was given several different copies of the bill which was confusing in and of itself. Why was our drinks and food put on this gentleman's bill and not on ours, individually to begin with? More tip maybe? This is not the first time there has been a problem with the bill. I felt very condescended to and basically embarrassed over the incident. This happened at the Louisville, Ky restaurant.