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Good one LL
I'm pretty sure that's a body repairmans hack and you have video proof.
:beer:
Blade
When he holds the can upside down it uses some gas that is meant to drive the air out, this gas is cold when it comes out the can. Metal shrinks and gets brittle when it gets really cold.
In case you misslaid your keys
https://youtu.be/9j4DqevlIRY?t=25s