I don't have to invent words or try to be pretentious. I know some Iranians, and I read.
Do you know anything other than the fact that you want to impress us?
<< I don't have to invent words or try to be pretentious. >>
You do not, it is true.
But nor do you have to spell that out, for that your vocabulary is limited is obvious to us all and that your pretentiousness comes to you without effort is made clear by your absolute lack of any other than the pretence of either experience or knowledge of that about which you make pronouncements.