why do you need a butterfly knife
Why is the grass green.
Because they are awsome, and they are fun to mess around with.
If you know what I mean...
what
They are fun to play around with, I think they don't take long to learn either.
??you don't “learn“ knives*stab*that is how simple it is
Cause butterfly knifes are the thing that's 'in' these days.
There are some things you have to learn about knives.