Having a knife on your keychain is indeed handy, but it’s best not to store the knife in your pocket in the open position.
“Why?” you ask. Well, if you put your hand in your pocket to get your keys for example, you may cut the shit out of your pinky.
Note: Be extra careful to pay attention when you receive a new package from Amazon, you may be overly excited, distracted and put an open knife in your pocket, which in turn leads to the above situation, and uncontrollable bleeding.
Double note: My studies have also discovered that flicking the knife off doesn’t seem to slow the bleeding, or make the stab-e look any smarter.