They are scam artists from (most likely) Nigeria. People who are privy to the scams and get those “my brother is a prince but can’t claim his millions without your help” emails make them do ridiculous shit and send photos to prove they’re legit. It’s what they deserve, and it’s hilarious.
This looks like something from http://419eater.com/. That’s a website where they scam those make money fast Nigerian scammers and they make them do weird stuff. Like pose with piece of bread on their head.