It was approximately 1984, and I must have been around 15. It was a quiet afternoon at the Capell homestead.

I entered the living room to see Petra, squatting diaperless on the floor with her back to me. She was apparently focused on a toy or some small object in front of her, and with her right hand, she absent-mindedly scratched the right side of her naked bottom.

Steve hunched nearby, facing me, and with one finger, he was lightly scratching the left side of Petra's naked bottom.

"I'm helping Petra", he explained.