I haven't seen a ton of them but this one I think is really funny. I don't think it's funny the potential situation the sub could have got him into - but how he handled it I thought was pretty good haha. Also I think half of the responsibility is on the host to be careful what he reads and where.
Although a lot of people will find it funny, that might be crossing the line. If that were to happen in a bank, it would have had a different outcome. Now with that said, I hold him 50% responsible for putting himself in that situation. When he saw the word robbery, red flags should have gone off and he should have taking more time to comprehend what he was going to say.