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Showers soak more then pools
(hackertalks.com)
A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. The best ones are thoughts that many people can relate to and they find something funny or interesting in regular stuff.
I'd imagine your standard for "fully dry" is just different for each of these.
I use the same metric each time, no longer dripping so I can get into the elevator without making a mess