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Hoisin sauce is asian sweet baby rays
(lemm.ee)
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.
No, you don't understand. These are merely normal rays being extracted from sweet babies.