Knightmare was an old show back from when I was a kid; the basic premis was that three kids had to guide another round the "dungeon"; actually a blue screen which their friend couldn't see cuz of the helmet. XD It looks pretty crappy now, but back then, it was the cutting edge of technology. Anyway, watch the video; it's hilarious.
Bet that kid smacked his friends for directing him wrong after the cameras were switched off!
YouTube - Knightmare - Simon, sidestep to your left.