I've got a handbag full of comebacks, i'll let you decide if they're witty or not
Whilst leaving a supermarket someone cried out "you've got tits!!", I grabbed them in shock & exclaimed "There must have been a mix up at the checkout, i'll have a word with management"
"I wouldn't shag that" exclaims one ignorant man
"I know you wouldn't, i've got standards you know!"
"Have you had the op?"
"Have you? You really should sue them"
When one man spat in my face I calmly replied "For future reference I charge a one drink minimum before exchanging bodily fluids, unfortunately for you that one drink would be a keg of vodka"