How should I mess with scammers?

So I look through the whole son died PS5 on Facebook thing. I know a number of them will block you if you point out it's a scam so I try to warn people through messaging privately. But I've found someone I want to mess with. But yeah I told them I live in Indiana and they told me they live in. Wisconsin. I tell them that's just 2 states away I can go all the way there. They still do insist on paying shipping. So I want to find a way to mess with them and waste their time thinking they have a potential victim.