Opening a can with your bare hands seems impossible unless it has one of those pull tabs or you're an international strong man. But in actuality, getting a sealed can open with just a friction from a flat surface is just as easy as using a can opener, and if you get good at it, it may even be faster. Check out the video below to learn how.

This is a really cool trick. Essentially what you're doing is heating up the seal so the lid comes loose, rather than cutting through the thick metal of the lid as a can opener or knife would do.

What's great about this trick is you can pretty much do it anywhere you have an abrasive surface like a road or sidewalk.

For urban survival, adding this trick to your arsenal of knowledge could definitely improve your chances. Or, if it's just a regular day out at the park for a picnic, impress your friends and family when you “forget” your can opener. Just be careful not to cut yourself on the edges!