He thought that since he was assertive with his answer they would not ask again. If he was passive they would be more persistent and think that he would change his mind. He also did not want to start a fight by being aggressive because that would make everything take a turn for the worse.
Hey, you should come try this.
I don't want to try it because it's bad for you.
It's not that bad for you come on just try it.
But, there are a lot more benefits of not using nicotine like my lungs will stay healthier, my fingers will not turn yellow, my breath will not smell bad, I will not become addicted, and I will have a lot more money then if I used it buying nicotine.
Even if that doesn't kill me then my mom will if I do.
Well doing it once will not kill you.
Come on just try it. Just once, come on I'll give you mine. I will not even charge you for it. Hey are you listening to me?
If I ignore him will he stop asking me? I'll try it and if it does not work I will walk away.
They are getting annoying
After many times trying to decline the offer he realizes that they will not give up. So he just walked away.