I could not believe how quickly things had escalated to this. I was scared if we would get caught. Sonali had started moaning too.Our mother was sitti...g just meters away from us, busy reading a magazine. while her son and daughter were engaging themselves sexually. The risk of her catching us, turned me on even more.Without even realizing, I was now dry humping my dick on my sister’s young ass. I could see her mini shorts had risen well above her ass cheeks, sticking in between her ass crack. The bowl was almost empty as he rubbed her flat stomach with his special cream, Massaging around her belly button, going ever lower, feeling his cock hardening again. God he knew it was so wrong but he just couldn’t help himself. Her naked pubis beckoned, hairless and beautiful. He looked at the bowl and realised there wasn’t enough left to do what he really wanted, what he really needed to do. He poured the last of his cum onto her flawless skin, watching as some dribbled between her pussy. We talked quite a bit the next few days and by Saturday I thought Icould sense mother's acceptance of my decision. We went out to dinneron Saturday night and had wine with dinner. Mother broke out the goodbrandy when we returned home.Not being accustomed to consuming alcohol, I must have had too much todrink. I woke up Sunday morning with a terrific headache. The lastthing I remembered was talking with mother and Abigail, my nanny. Wewere all in good spirits, or so I thought.I tried to stand. Jan straightened and glared at him impatiently. Then she spoke.'Was I not clear enough?' She grinned.Dave slipped his hands gently over her smooth hips, sneaking a little stroke before complying at an agonisingly slow rate. Maybe I should chastise him for touching too much, Jan thought. She shook that thought off - she was enjoying it too much!Dave peeled the scant lace knickers carefully over her bush as if he was removing the wrapping from some delicate gift. He could smell her. Strong wafts.