903
xkcd #2929: Good and Bad Ideas
(imgs.xkcd.com)
Alt text:
While it seemed like a fun prank at the time, I realize my prank fire extinguishers full of leaded gasoline were a mistake.
They kind of released under the radar because a comedy skit about them came out and gaslighted people into believing they were not a real thing.
I only found them because I went to order contacts and saw the product category.
They aren't as good as sunglasses(but are really awesome) and they don't work much in the car so you will still want sunglasses.