Good tactic
The thing that most men hate the most is when people take a shot at their masculinity. In this case, this beggar is taking aim at the most valuable part of their masculine image. He is, in a way, trying to trick them into giving him money by hurting their ego.
We have to admit this is a pretty clever way to get a few dollars out of insecure men who are walking the streets. This beggar must have taken a course some time ago on psychology because this is a great plan that could be potentially profitable. Let’s hope his experiment worked and he’s off the streets now.