Picture:
http://preview.turbosquid.com/Preview/2014/07/11__16_24_14/P...
More discussion:
https://www.reddit.com/r/AskEngineers/comments/372h8x/why_th...
Last weekend, on my way to the supermarket, I saw a juice bottle blocking a drain. To follow UncleBob's advice to clean as I go, I picked it up.
https://www.youtube.com/watch?v=BSaAMQVq01E&t=2021s
I wanted to pour out the remaining orange juice for a nearby tree to get its vitamins. Pop! The cap flew off, lightly knocking off my forehead, but with much force. Thank God it didn't shoot into my eye, it was quite powerful.
Although it wasn't a fizzy drink by design, the juice had fermented in the hot sun.
Today I learned that there's a solution to the cap flying off, using a different design of screw thread! Thank you jfrunyon for posting this to Hacker News so we can all learn from each other :)