How to cut rope in emergency?

How to cut string or rope if you haven’t got a knife or a pair of scissors. Great life hack trick to help you in an emergency. Cut rope with string!
You must have had such a situation that you needed to cut a rope but you did not have any scissors nor a knife. We hope you won’t be in need of doing so, but still it is good to know how to do it. Let’s se the video DaveHax made: