Scamming people is just wrong. If you do it, you're a terrible person.

But if you do happen to be a scammer, you need to at least be good at it, unlike this guy.
This dude sold a guy a cell phone, but when the guy tried to activate it, it showed up as stolen. So, he managed to get in touch with the Craigslist scammer again and set up another meeting.

At that point, he gave the scammer two options: give him his money back or give him a new phone.

The scammer took about two seconds to think about it, before offering the guy his money back. In fact, he ended up giving him an extra $40 because he was no doubt grateful for not getting his ass kicked!