Nature’s Can Opener
There are not many things more infuriating than arriving at your campsite and noticing you packed only canned foods but forgot the can opener. But if you’re ravenous enough, you’ll get creative to find a solution, like this man apparently did!

Source: Toppoptoday.com
We fully respect the effort because a pointy rock was most likely the best option available. Just remember to be vigilant and double-check for rock bits when you have your bean dinner! Our mouths hurt just imagining it!