I got an earlier variant purporting to be from a friend who was stuck in London, had their wallet stolen, and needed cash wired to them so they could get home. That was remotely plausible based on my friend’s recent travels. I replied asking them to tell me where and when we first met and what we did the following day. They tried going back to reciting their story but I wouldn’t move until I knew it was really them. Fucking scum. They should be made to drink cold hotdog water that Satan’s hemorrhoids have been soaking in.

Another verification that works is “I’ll call you, let’s talk. What number can I reach you on?” They’ll usually drop contact at that point.