Rule number 9: Never leave home without your knife!

“I hope you know, what you do,” the shop owner mumbles while giving you one of his knifes, “they are really sharp. Military quality. You can kill somebody this them. I hope you do not. You can also use them to cut rope or zip tie, if necessary. Or threaten some idiot who wants to rod you. Just press this tiny button and the blade jumps out of the hilt. The stump side comes first, but please be carefully!”

You test this first and see he is right. The blade comes fast and is really sharp. You promise to be careful, close the knife and put it back in your pocket.