Relaxing day. Read. Watch birds. Listen to music.”“I’d like for you to explain how a sailing boat works.”“I can do that.”So we spent an ho...ur or so, after washing up, on the theory of sailing. She was very quick on the uptake and I saw the light of understanding in her eyes. Then, mugs of tea, sitting in the cockpit with the binoculars and a bird-book. Most of the time I was content with what I could see with my model zero eyeballs, but from time to time Clara would ask something and I’d take. ... 'Come on let's get these trousers off and cover you up' l undid his button and zip and started to pull his trousers down, bit shocked to see he had no undies on and more shocked to see his cock getting erect rather quickly. l managed to get his trousers off, seeing his stiff cock wobbling about in the corner of my eye. l grabbed hold of the sheet to try to cover him up quickly, but as l pulled it up over him he took hold of my hand and put it on his by now very stiff cock, 'please sis' he. Nic's tongue found her clit and Bex's ass cheeks tightened as she experienced the pleasure then as Bex relaxed slightly Nic pushed a finger into Bex's pussy."Oh my god" she screamed as her whole body shuddered and she climaxed collapsing against the wall and onto my wife beneath her.I was ready for a fuck now!!My cock was rock hard and as the girls untwined their sweat covered bodies Nic looked at me with a smile "me first!" She exclaimed.She knelt astride me and lowered her wet cunt onto me. She was given the room adjoining with our kitchen. So every time I went to drink some water from the fridge when it was past midnight, I used to take peeks into her room to watch her sleeping peacefully. Those were the best times I could conveniently watch her without any guilt. She really had such a sexy body. Few times I managed to push her skirt up enough to admire her bulging thighs and buttocks. Sometimes I even got to her bra and heavy upper cleavage when the top buttons were left open.