Rotring Pen? What is it?

This sketch I dedicate to the guy who refused to sell the rotring pen to me.

Meditation is really helping me a lot. At normal circumstances I get angry with the people who are smart enough to judge others without knowing them.

The guy asked me, do know how to hold this pen? (I was laughing at myself- It's been six years since I finished my viscom and still people think I am a school kid)

He was right. I don't know how to hold this pen.