Yep, I've checked thoroughly and there doesn't appear to be any sort of light shining in me. I've even tried standing in front of a mirror in a darkened room and there doesn't seem to be any sort of light leaking out of my various orifices ... you'd think there would be, wouldn't you? I suppose it could be in a light-proof bodily cavity but then you would have thought a doctor would have detected it by now, wouldn't you? Internal lights - that's a new one on me!