After a morning filled with excitement, my mother and sister's games, Fabiola and I, taking advantage of the fact that many people were still at lunch, making the beach almost deserted, began to make love to each other. After a gentle start, Fabiola told me that my mother and sister were watching us and that she wanted to turn them on. After making sure no one else was watching, she pulled out my cock and began masturbating me, inviting me to do the same to her, after moving her thong so they could clearly see my fingers playing with her pussy. As our mutual masturbation intensified, Fabiola began whispering in my ear that she thought their pussies were soaking wet and that they were definitely craving both her pussy and my cock. I came, spurting all over the towel and Fabiola, who collected the cum with her fingers and brought it to her lips, savoring every last drop. I continued to masturbate her until her body began to tremble, arching as she reached orgasm. This was accompanied by an intense moan of pleasure that she couldn't contain at all. When I looked at my mother and sister, I knew from their expressions that Fabiola was right.