Slap chop, Slam chop, whatever.
Whether Vince knows Steve and this is part of his genius, or Steve just found a cool clip where the audio tracks for the voice were very isolated, meaning, no background music or sounds. This allows you to sample and change pitch of the voices and phrases. Combine that with vocoder, a pro DJ soundtrack and you've got a recipe for success.
Check it our for yourself. Click the HQ button for stereo sound and a higher quality audio track. This is the official youTube video and not a knockoff version. Enjoy.
Enjoy those sales, Vince. Either you're a total genius or extremely lucky that DJ Steve Porter decided to focus his attention on you. Here is a comment by a youTube viewer that sums it all up:
"I want one. I don't even need one."