I carry a balisong knive and learn new tricks when I'm bored.
Nice. When i'm bored I would just take and keep running my thumb across my knifes blade. I can't believe it hasn't sliced me yet.
Also I carry a pencil on school days usually.
But when do you need one? Looking at the rest of the thread, I think you just have one to be cool.
There are a few occasions were you would need one.
1. Rope needs to be cut
2. Something needs to be cut
3. Something to mess with when bored
4. Protection
5. ???
6. Knowing that you can be safe if a dude tries to rob you.
How do you fit all that in your pockets?
Big pockets. I've had more in one pocket man.