NRI Homecoming

He was sitting inside the calltaxi he had hired to go to the fancy restaurant where he was going to meet his gang of friends. He had landed only 2 days ago and was in India on a 3 week vacation. How much he missed his gang and he couldn't wait to get there to meet them after a gap of 2+ years. The last time the entire gang met, it was so much fun. He happened to be the second guy in the gang to work abroad. He had a sudden flashback.
It was when "the first guy in the gang who got a job abroad" was visiting. The entire gang including himself wanted the NRI friend to treat them in the new hotel that had come up in the city. The gang was already there and the NRI friend came a little late blowing his ruddy nose. The customary ragging started when the NRI friend told them that he caught cold because of the pollution and that he had been moving around the city a lot. "You guys start talking about pollution in India the moment you get visas, don't you?" "So would you drink only bottled water now?" "Didn't we all go to college in the city bus hanging on the footboard for so many years without falling sick?....dhoda". The NRI friend was ribbed royally and he only replied "You would wish that immunity sustained for the rest of your life but that doesn't happen". After a lot of catching up and calling the NRI guy "a typical NRI", they had all dispersed.
The taxi stopped at the fancy restaurant and he was delighted to meet his gang. After the hugging, one of them asked him "Are you not well?". "No, I am fine, have been having this cold for more than 2 weeks. Now that I am home, should feel better soon", he said in his nasal voice. He had to lie and he was glad his friends believed him.