It isn't illegal unless you are pretending to be homeless to either harrass someone or for illegal purposes. eg. Nobody would expect a homeless to be carrying a secret supply of and illegal drug...
Yes, there are people who will fake just about anything.
Can we feed the homeless in Dubai
Yes.
no
no way
yes
no you cannot that would be illegal
obviously. why do you think people are homeless?
I believe that it is illegal to pretend to be someone else that actually exists. However, if you are pretending to be no specific person, and just lying about your description, it's perfectly fine. It is also illegal to pretend to be a Doctor, or any other authority figure. By the way, as long as you are not DIRECTLY disguising yourself as someone (I.E your best friend), it's legal.
no i dont think so. why would it be?
If you are trying to defame and/or defraud someone of goods or services, yes.
No one "records" such incidents, since it is not illegal.
Yes, it is a Federal Crime to mis-represent one's self and can be prosecuted as fraud.