Oh man, I think I am lucky enough about 3 years ago. I met a guy in a bath that he is very into fisting and bottoming. That night I topped him and left home soon. After a week, I tested my luckness if I could catch him again in the same bath. He was there. Then I asked him if he could teach me how to get cock up in my hole and could reduce pain. The guy asked me lying on the sling to let my hole in the air, then he used his finger to show me the proper way of using my anus muscles while a cock thrusting into my hole. Since then, I practiced couple of times myself. Now I am always told I am a good bottom, even called me a power bottom boi.....lol, thanks to my "teacher." But I have not seen him for 3 years now b/c he is in a relationship. He really teaches me alot, not just being a good bottom, he also teaches me how to play saver to minimize getting infection from Hep and other GI diseases. Later he told me his intention of teaching me b/c he likes to have more guy can fist him good. LOL