to irritating people. Do you think that arrogant, annoying, irritating people who repeat their habits again and again makes you indifferent/immune to them? If you do something its ‘‘don’t stoop to their level’’ if you don’t do something then people run over you. Duniya..
Re: Getting immune..
You don't get immune to it rather become less confident or less sure about yourself. You loose the ability to defend yourself. All of us are brought differently and in various environments, this is why we have different attitude, this is why you cannot expect to have the same level of etiquettes that you have.
Whenever someone crosses your line of decency, speak up and let that person know. Otherwise, they will continue to walk over you and the entire world will follow.
Re: Getting immune..
But what about people who ignore the idiots? Doesn’t ignoring bewakoofs make the bewakoofs seem like bewakoofs? 
Re: Getting immune..
They make me mad even more. And sometimes immune. I dunno, depends on how dumb and arrogant they act.