Send him an e-mail saying, "Hey, I sent you $100. I would deeply appreciate it if you spent it on your beverage of choice, or a nice dinner with a friend, rathe

Send him an e-mail saying, "Hey, I sent you $100. I would deeply appreciate it if you spent it on your beverage of choice, or a nice dinner with a friend, rather than on necessities." It's no guarantee, of course. :)