I have an old-school waterbed too. One time all the guys in the family were up deer hunting and I invited my mom to spend the night. She'd never slept in a waterbed before, so that in itself was an experience for her. Anyway, she woke me up in the middle of the night and asked me how come the sheets were all wet. "I dunno; did you wet the bed??"
Turns out one of the little tiny nails that holds the liner in place worked itself out and poked a hole in the bed. It had been leaking for a few days and I didn't know because I hadn't slept on that side of the bed.
I teased her for years about wetting the bed when she slept over.


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