"My turn Mom" he said as rolled her onto her back before kissing his way down her neck to her waiting breasts. Alternating between them, he sucked and...nibbled at her nipples while massaging and gently nipping the free one with his fingers. As he felt his Mom's arousal increasing he kissed his way down over her stomach, watching the muscles contract as he licked her navel. Moving lower he eased her thighs apart and gazed for the first time at her waiting pussy, at the place that had given birth. I was on a build this past summer and we finished the home and presented it to the family. They were a single mom and her 3 c***dren. The oldest was a young man of fifteen soon to be f******n. The youngest was 10. We were cleaning up the bits of remaining debris and doing some final bits of grading as we did. The family was given the keys and the boys all headed out to the tree in the yard to play. We found a heavy rope earlier and tied it high in the tree for a swing. I tied a tire to it and. I tapped on it and was rewarded by my sister’s dulcet tones.“Go away Andy, I’m having a bath,” were her words.“And I need to have a shower ready to go out,” I replied.“Then come in, the cubicle’s free,” she answered.“Oh yes,” I said, “that’s great, you’re in the bath naked, I’m in the shower naked, and Mum walks in. That would go down well. We’d both be grounded until menopause.”“Mine or Mum’s?” she asked.“Mine,” I replied.I heard her tinkling laugh.“Ok, since it’s you, I’ll get out long enough. Two harmless triangles of pink fabric fell to my body as I stared into the face of the most beautiful woman I had ever seen. I looked down and took in the sight of my first view of naked boobs. She was not "busty", but her skinny frame held two perfect mounds of flesh about a handful (I have big hands), which as far as I was concerned were the perfect size. Topping them of were two dime sized areolas, barely darker than her lightly tanned skin, with two pencil eraser sized nipples which stood.