There used to be a gentleman (?) flying in the UK who sounded like a lady. In fact, we were told he changed into female attire quite often. We used to delight in saying "Good morning, sir" or "Gooday, sir" to he/she.
Northbound working Brest one evening...
" ###181 Contact London now 134.45. "
" London er..135.32 ,###181; au revoir Madame. "
" ###181 frequency tonight is 134.45..."
" Apologies. 134.45, ###181. "
" Thank you sir, good night....and I am not a madame - my name is Bernard! "
Fortunately, I fair better when I can see them!