its another way of saying every
insult possible all in one word and if said to
people who dont know the meaning they will be all
confused.
person 1:damn you got the last pork
pie
person 2:yeh sorry do you want it?
person 1:oooooh thankyou ghera
person 2:dont mention it??(<they all
confused whether ghera a compliment or an
insult)