Sorry if I misunderstood you. I read " Can I risk it or he could get mad if I don't show my PR first to see what he says?? I did not use a US passport to receive my PR before so I was hoping I could get in undetectable..." and that sounded like you wanted to tell the officer if asked that you are not a PR and hope he doesn't find out. In that case it wouldn't in fact be misrepresentation.No I am not trying to misrepresent myself!! I'm simply asking in case I give the officer my new passport which is different from the one I used to get my PR, is he going to ask for PR? I do not know if I have to present my PR or not since I am visa exempt. I'm trying to weigh my options to see what the best way is for going back and not getting into trouble but I never said tweaking the truth please don't judge people based on your personal guess!
If you are asked by the officer why you are coming to Canada and say "just visiting" that would be misrepresentation, if you're lucky and they don't ask that then you're good to go.
Again sorry if I misread your post in away that you wanted to actively hide that you are a PR.