The best lifehacking in the world: how to sharpen a knife with an ordinary cup

What if in the kitchen all your knives are not quite sharp.Is there a way to fix it very quickly? It turns out, there is.  So what to do?

It’s very simple. Take a porcelain or ceramic cup. Place it upside down and hold it on the table with one hand. Take the knife in the second hand and try to find out sharpening angle. Then, doing sharping movements begin to sharpen the knife with the bottom of the cup. Keep doing this for about a minute. That’s it – the knife is ready for use. Do not believe me? Here is a vivid example.