We sucked and fucked whenever or parents were out but loved to screw while watching them. If we wanted to make sure they were going to fuck that night..., sis would wear her thinnest panties and parade around dad. Sometimes she would even take off her bra in front of him making sure he got a good look at her tremendous tits. That would mean mom and dad would go to bed earlier than usual. We both would fantasies about sis fucking daddy and me fucking mom but we never acted on it. There were two. The whole drive I was getting super horny from the anticipation of a sex adventure. I browsed my tinder app, checking out some of the conversations and pictures i had from previous chats, eager to get there and check out the locals. When i arrived I checked into my room and went straight up, laid on the bed and started swiping. It wasn’t long before i had a few conversations going. I carried on a few dirty conversations for a bit and eventually narrowed it down a few guys. My first choice was a. He came to me, took my hand and said. "I have to go potty." With a pull from him, we went into the house to find the toilet.This time he stood at the toilet and aimed. He was 98% accurate. We wiped up the 2% then washed out hands. As soon as I put him down, his feet were churning, heading out to the porch to tell his Mom how well he had done.The twins were asking if we could go back to the swimming pool to play. Maria was saying that they should ask me. I told the twins we could go as soon as. Gemma decided to wear a pair of skintight black leather trousers tucked into knee high black leather lace up boots with 4" metal stiletto heels,blue lyrca low cut top which clung to her every curve and elbow length black leather gloves which she had pulled over the tops sleeves, to finish the outfit off she had a black leather jacket with 3/4 length sleeves.I mentioned to Gemma that her outfit might make it difficult for her to take advantage of anything that might be on offer,she just smiled.