Things we some time do not need to know.

I am the baby of the family and my sister is 12 years older and my brother 9 years older. A cousin who is 10 years older thought I needed to know. Seems she and my sister talked about sex in their youth. She told me my sister wanted sex long before she did. Had a boyfriend and sex by 16 years old. From there went wild over sex. Seems my brother wanted sex like most. My sister talked her into letting my brother take her virginity. To prove it was not bad, she spread and my brother went in her with out a problem. She told they has sex most days after school.
I remember the suggestion I go play and would fix me a snack.
Wanted me out of the house so they could get it on.
I ask some questions and she knew the details. How big he was and one peculiar thing. Had she not seen him nude would not know. She also knew about my sisters birthmark. The one to the right of her vag opening.

She talked of the Sunday dinners and her with my brother and sister. he would cum in my sister and not worry about it. How my sister loved to watch him screw her.

Not something I wanted ot hear.