The mud soon dried and we decided to jump in the pool in the river to wash off the mud, swim and literally just chill in the midday sun. Thembu was t...e first to remove his shorts and jump in the water. He was followed by Josi, Elias then me. As teenage boys we all frolicked nude in the clear river water removing the mud and letting the water cool our overheated bodies. It wasn’t long before the horse play started, grabbing and ducking, and making attempts to grope the other boys’ cocks. While the folks were gone one weekend, my brother and sisters were in the girls bedroom playing with their chistmas games (or so I thought). I had gone outside so I could play with some of my Christmas stuff since it was the first nice day in nearly two months.My sister Dot called through the window to come in the house she had something to show me. I went to her room and stopped in my tracks, I could only stare. Dot and Sherry were naked on their beds with their legs open showing their pussies. I rifled through my closet until I found the perfect outfit for a hot summer day as this: it was a short pale yellow sundress, almost see-through if one caught it in the proper light. I wasted no time with bra or panties. I slipped it over my head and as I was smoothing it down my body, I called out through the open door:"Oh, Scott? Could you please come in here and give me a hand?" He arrived in record time, as expected."Would you be a darling and button me up?" I turned around and. " He was looking right at my face into my eyes while he said it, with a dirty look on his face. Loving making me grind into his hand seeing what he was doing to me.I pulled him out of my pussy to go to the bathroom. He came in after one minute and forcefully pushed me over the sink I was leaning on my elbows as he sunk his cock into my pussy again, fucking me harder and harder, pounding into me as my legs were shaking under the strain. "Fuck me harder" I said. "Harder fuck me harder."I was.