I want to put my finger in a pencil sharpener
How come you want to put your finger inside a pencil sharpener?
I'm feeling like mutilating my finger ridges
Pencil sharpeners are for pencils only and you should take care of the blades and gears inside the mechanical devices. If you feel the need to harm yourself, talk to someone about it before doing anything drastic.
Pencil sharpeners are overrated and they don't do anything.
That is not true. Pencil sharpeners are mechanical and made up of razors. You should try not to put your fingers in places where you could really hurt yourself as it should only be used for pencils.