Sooooo, maybe I'm just not that smart, but I don't see how it's even possible to do the beginning section. I can go upwards, take the left path so I can get flipped downwards, and that's it. There isn't enough space for me to clear the spikes on the right path, and I don't see anything to flip myself around to head upwards again after the first flip. Is the whole beginning section just one of the jokes?