You've hired me to give you a Karate lesson, you want to become a black belt master. But when you arrive, I bring up a rumor I've heard about you having a small dick. I instruct you to show it to me, and confirm, you have a little dicklet. I don't think you're ready to become a Karate Master, but I can teach you to master the Two Finger Tug. I teach you the basics of the specific stroke for small wieners and have you practice for me. Once I see you've gotten the motion down, I strip off my Karate uniform and give you a cum countdown, allowing you to spill your load. You certainly won't be leaving here a Karate Master, but you definitely have become my bitch :)