My kid likes knives. On our Oregon trip this summer I got him one of those crazy knives that you pop open with just your thumb. It's for whittling, or killing bears. He loved it and made his arm sore on the day he got it popping it open repeatedly. The picture below is the very same knife. It's a Smith and Wesson S.W.A.T. knife. What 13 year old boy wouldn't want one!
Many years ago my best friend, who had the coolest knife collection any little kid ever had, got a brand new Swiss Army knife. He brought it over to show me--we lived across the street from each other. While it was open I grabbed it out of his hand and nearly sliced his thumb off. It was repaired. It's a favorite story he likes to tell. I think he tried to take it out of my hand--blade first. We'll never know (he is probably right).
Now, about 35 years later, my friend, who still lacks feeling in the tip of his thumb, went on a European vacation and while in Switzerland purchased the same Swiss Army knife for my son that I used to slice his thumb. He is a very funny guy and this is the card my son received with the knife: