Adjective. masterbaition that is lame or not a pleasurable experience
Dude... I just Sharpen the Pencil...
When it´s so cold your nipples harden to the point they can slice steel.
Doctor: "OMG I´m out of knives I can´t operate on this patient"
Doctor 2: "Hand me some ice and i´ll do some nipple sharpening"
An offensive insult used to describe a female that like prefers underweight males, indirectly referencing their intercourse which would resemble a pencil being sharpened.
I saw her in the car with that skeleton-looking kid, you know she's being used as a human pencil sharpener.
A device for sharpening dildos
My your dildo sharpener is efficient in it's duty