Craigslist scammer targeting my son...

My son put an ad on craigslist for some car parts and a guy responded who is trying to scam him... He sent a large check above the amount, and is trying to get him to send him back the "difference"...

I told him to be careful and not send any money until the guy's check clears, and wouldn't you know it, the check bounced (bank says the account was closed)...

Now the guy is getting real pushy trying to get him to send the "refund"...

We haven't told him that we know the check was no good, just stalling him saying it hasn't cleared... The bank hit my son with a NSF fee for the check bouncing...

We are going to string him along for a bit... Anyone have some suggestions of some other things that we can do to "play" with him....

Post them up and we will have some fun with this guy....