“I think the retarded kid down the street is trying to blackmail me.”

“You can’t say that, that’s offensive.”

“Sorry, sorry, I think the retarded kid down the street is trying to coerce me through threats…”

That guy/girl handled this very well. If you sus someone using a fake profile, I would recommend something like https://tineye.com/ (reverse image search) to find out if the person stole their photo from somewhere.

Beware, this will not work on AI generated images. But when you do get a search hit, you can almost be certain that the profile is fake.