By the time I was thirteen and so familiar with nudity and my parent's sexual activities, it was not unique for me to come home from school and see th...m on the living room floor, my naked father on his knees behind my mother with his cock plowing in and out of her from behind. My mother's tits swaying as my father's cock pushed and receded inside of her. I never really stopped or stared, just went about my business, usually getting a snack in the kitchen then sitting at the table with my books. But it was a total turn-on, seeing mom’s breasts like that. She had to be displaying them on purpose.Every minute or so, she would straighten and pull the sweater up by the shoulders, which pushed her nipples against the fabric. Her nipples were somewhat small, but produced clear points in the fabric and the outline of her breasts was clearly visible. Then the sweater would fall forward again and I’d get another look at her naked boobs.They were incredibly enticing. Mom’s breasts looked, I. ...you're stabbing me in the leg, and it hurts." She giggled and moved her leg around. Shiloh looked down at the boner stabbing into Jane's thigh. "Oh, Jeez....my bad." He adjusted himself to where he was pressed into her hard enough for her to feel him, without hurting her. "Now where was I?" Jane smiled and lifted her shirt up letting her breasts free. Shiloh's eyes grew big as he finally got to see her beautiful breasts uncovered. He quickly buried his face into her chest and wrapped his. Most of the time I would wake her coming in. This particular morning it was 8am and I was dead tired. Climbing the stairs to my room, I noticed the (shared) bathroom door open but a sound of water running. I thought she had left a tap running overnight so I walked into turn it off and brush my teeth – only to be greeted by the sight of Julie showering. She must not have thought it was late enough for me to come in yet or she did it on purpose, either way I was greeted to her glistening naked.