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An airport is an air-port. A port via the air.
(lemmy.world)
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 don't know what bus stations you've been to, but every bus station I've been to was something like an airport. Everything else has been a bus stop.