sleepover

When i was 11 during the sleepover at my friend’s house i saw his parents naked in the bathroom through the keyhole. I thought they were fucking and i wanted to see them in action. My friend was watching tv and didn’t notice anything.
When i peeked, they weren’t fucking. The father was pissing, and the mother dried her hair with a towel. The mother was not beautiful but she had a beautiful body, with small breasts, round ass and the hairy cunt. Then her husband walks behind her and gropes her ass; smiling she squeezes his cock and balls for a few seconds. He walks past me and i see his semi-hard cock swing towards the shower. I saw his wife take the hairbrush and bending over she showed her ass and her hairy cunt from behind.
After this i got a drink in the kitchen to have an apology to my friend. We played with the pc and nobody noticed anything. A few weeks later i also saw his sister changing in front of us. His sister was very beautiful and was 4 years older than us. Sharing the room i think it happened often. She took off her shirt and shorts, showing herself only with bra and panties. I could admire her for a few minutes as she took the clothes from the closet and got dressed. She had big boobs and hairy cunt was clearly visible.
When we were alone my friend asked me if i liked his sister. I said yes and asked if he liked her too. He said yes, but she didn’t care because she was his sister and he had also seen her naked.