904
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.
In the cold they take too long to transition to clear. So you end up taking them off for a few seconds when you go inside. It's only minorly annoying.
To be fair, regular glasses mist up anyway when going inside from the cold, so you take them off anyway
Didn't really notice much in the winter here