How to fix a flat tyre

Sure you know hot to fix a flat tyre...IF you had some patches, glue and perhaps even some sandpaper. One of my friends, rightly knowing I would enjoy the video, sent me a link to an imaginative way of mending a flat when you do NOT have the right kit. I guess it may even work when you get a big crack on your inner tube, wouldn't it?

In any case, do let me know if you have tried or will try this technique - I will very be very keen to hear how it all went or if it actually works?!