Just because ... well, we don't know why. Just because.
Pretty sure it is the video star himself who wrote in the comments: it was hot here in SoCal yesterday and this video was a spontaneous situation. I had the melody in my head and didn't want to lose it so I had to act quickly.
If the OKC Thunder promotions folks have any sense, this will be on the video board at some point during Game 2 against the Rockets.