He sounds like an Australian Aborigine or New Zealand Maori, actually.

Really? Please explain because the pixels check out ok on my end.

The only thing I can think of is the clap vs. the bolt itself: hard to tell how far away it is (it's still pretty close, looks as close as half a mile out) but I'm pretty sure unless the lightning quite literally struck the man holding the camera, there would've been at least a half second delay before the clap.

(but fake or not I've been seeing this around for a couple of weeks now and it still makes me laugh every time.)