What do people say to scammers instead of hanging up?

I was watching this YouTube video about the title question (link below) and it got me wondering… What do all my fellow scambaiters like to say or do to scammers instead of hanging up? How do you build suspense to keep them on the line? How do you make them break professionalism and get downright furious with you? I would love to hear some of your ideas and strategies as I’m really new at this but I want to kick some scammer butt.

P.S. Hi Jim Browning