Before i knew what cfnm was [I Love Cfnm]

When I was in my teens I was staying over at a female cousins house. I was on the floor next to her bed on my make shift bed under the covers. I remember asking her if she wanted to see my butt. She said yes. I rolled onto my stomach and under the covers I pulled my pants down past my knees. As I did so I got an erection. I said ok pull the covers down. So she did. Then after a minute she reached down and felt my butt. Then she said she wanted to see my thing. I got harder. I rolled over and she squealed and laughed when she saw it sticking up. She asked if it was always like that. I said no only when I want to show it to someone. We heard her parents come home and I pulled up my pants