[Be sure to view the reader submitted videos in Turley's comment links...especially using a CD/DVD to open a beer bottle.  Survival skills man! ;-) ]  In our category of useful things to know, I give you how to light a cigarette if you are caught in the desert with no matches and only an AK-47. When I saw this on Reddit, I immediately thought of how the Cub Scouts never mentioned this use of automatic weapons.