A closing to an interaction taking place between two individuals that is ment to convey good wishes but when used between twomales, it is ment to be insulting.
I saw these totally botacious females that I wanted to bone, so I yelled, "And a good day to you, madam!"
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi