I too have mistaken a number of sirs as ma'am and vice-versa....
even more embarassing.... i'd just done four sectors in and out of canberra and it had been a
of a day. By the fourth landing I was well and truly over making the "thank you for flying.... blah" PA. I hung up the hand set and said to my colleague at the front door with me, "geez they don't even listen, I may as well have told them to shove it up their
" I thought i'd said it ever so quietly but apparently not. My passener in row 1 heard me!! Thankfully she thought it was HILARIOUS but I was mortified and beetroot red as well