As in ones that look like even on paper the borrower will have no way of actually paying back. Or if they do they will have no leftover money to spend.
Based on this thread where fortunately the guy ended up changing his mind:
https://www.city-data.com/forum/mort...-question.html
Mainly I’m looking for cautionary tales as I actually know some people who are interested in taking out some really high mortgages. Ultimately it’s up to them, but I try to be a good friend and give them a little more info to make more rational decisions