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xkcd #2929: Good and Bad Ideas
(imgs.xkcd.com)
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While it seemed like a fun prank at the time, I realize my prank fire extinguishers full of leaded gasoline were a mistake.
It’s not the shape, it’s just the transitions themselves. Aesthetically, sunglasses have a handful of popular styles. Whatever frames you have for your regular vision correction, most likely aren’t one of those styles.