I'm quite aware of the physics involved. I just clearly wasn't being descriptive enough. But can you imagine a way to make scooting around on your butt to sidle up to the flame look dramatic rather than goofy? And setting that to music as part of a dance routine? :)

No, they walked over it and sat down. Squiggled around a bit, then stood up and walked off it. And I should mention that the area of flame was larger than they could cover individually - so they were not just sitting on fire, they were sitting within fire.