> It's strange that I always manage to miss most of stupid day because I am returning from a trip. We completed our cruise early yesterday and spent most of Sunday and Monday driving home. The irony here is that I got off the ship feeling fine after a much needed rest, then wore myself out by driving eight or nine hundred miles.
> But I may have just enough strenth to explain that subject line right up there.
>
> We spent a week on a large, beautiful, fancy, haunted cruise ship. Actually, only the plumbing was haunted. I got up one night and stumbled into the bathroom to ... er ... get a drink of water. I didn't turn on the lights so as not to awaken anyone. While I was steping up* into the bathroom, I noticed a strange blue-gray glow on the floor. Then as I stood there, one foot in the hall and one in the bathroom, in the dark, with one hand on the light switch, I noticed that there was also a glow in(are your ready for this?). So help me there was a blue-gray glow in the toilet, right down in the bottom of the bowl. I squeezed into the tiny space and turned on the light. Everything looked perfectly normal.
>
> I went back to sleep thinking about the light in the toilet, and the next morning I could not be certain it wasn't a dream. So the next night I gave my eyes time to adjust to the darkness and eased quietly into the bathroom and there it was. The floor was actually glowing in two spots about the size of a dinner plate and a saucer. But the brighter glow was still in the toilet. It was there every night and I still have no valid explanation.
>
> My old body is ready to turn off the computer and hit the sack now, but if anybody cares, maybe tomorrow I'll discuss some theories about why it glows. My investigation was somewhat hampered by my desire not to be labeled stupid or crazy.
> Howard
> *For some reason, you always step up into the bathroom on cruise ships.

A possible explanation:
There was a locked panel just outside our cabin door. There must be a light in there that illuminates the space behind the toilet in our cabin. The fixture is mounted on the wall instead of the floor. If the drain was made of plastic pipe, and that pipe is transluscent, then light might be visible in the bottom of the bowl.
Howard