Refactor Pen

Pen rules:

Write a name, generally, using the name you know them as works, as the pen knows who you are pertaining to. A name will make them own the item it is printed on.

By writing a word, everyone will now perceive the whole item as the word. For example, writing the word "girl" on a boy will make everyone perceive them as a generic "girl".
Adjectives will change the written word to fit its description, the more accurate the better.

To change a specific part you can draw a border around which parts you mean to affect. You can also write the word of the part you want to change, then draw an arrow to the word that you want the part to be. For example, writing "penis -> vagina" will have everyone perceive that penis as a vagina.

You can combine all of these together.

By writing a name in a bordered part, or by putting ownership on an arrowed part, you can change its ownership, For example, "penis -> Michael's penis" will have everyone think that that penis is Michael's penis, despite it being attached to someone else. Writing "mouth -> Michael's pussy will make everyone treat that mouth as your pussy.

The pen will not give you ownership of anything bigger than a car, to avoid having unintentional ownership of things with larger scopes.

Enjoy!

You were scavenging the lost and found in your high school for a pen, needing it for a test, when you notice an ornate black pen, with ivory and gold details. It was basically hoping for you to pick it up. The moment you picked it up, knowledge of how to use it arrived to you in a vision. You leave the room now with basically magic powers.