In the clip (Thanks to our friends at Pinehurst for bringing it to our attention), a guy is in the middle of his swing when a friend tries to mess with him by tossing a golf ball into his space. The ball he was originally trying to hit gets knocked out of the way, but the guy crushes the tossed ball instead.
With so much happening so quickly, it's a good thing there's also a slow-motion version. Anyway, check it out:
Did he mean to do that? No way. But that makes it even better.