Well probably the worst thing i ever did and wish it never happened. I was 15 and my cousin was 10 years old. one day i made a mistake of showing her my cock for fun and she became so keen on watching it. Every time we found ourselves alone in a corner of the house, she wanted to see it. So we sat upstairs on a bed and I told her about how sex is done and after some time my cock was in her mouth. Then i tried to fuck her ass but it was not going in. So I lubed my cock with Vaseline and tried again but not successful again. Then I lie down and tried to make her ride me in her ass and my cock accidentally slipped and went deep in her pussy. I got scared and quickly removed. She bled a little and I cleaned it up fast with toilet paper and we pulled our clothes up. No one knew about it, now she is 16 and I wonder if she remember it, but I really wish that never happened because I just got carried away that day.