The bikini yesterday helped me see as much of her erotic body as I ever saw before. I booted up my work PC and started to work. It was about a hour la...er when Jenny wrapped on my office window again. This time she had a big piece of cake. I wondered if she baked it.She also had on a top that was small, tight and hung down cover her breasts, just her breasts. It had a piece of material that hung down over the bra cup which housed her small but perfect tits. Her middle was bare and she had shorts. I rip off my bottoms, exposing my hard, erect cock; get up on my knees and squat over her tits, my hard cock pointing towards her. My Mum cups my balls with one hand and slowly runs her other fingers around my shaft and up and down my length. She slides her tongue out and start to flick it against the tip of my cock, her hand slowly pulling back my foreskin, exposing the wet head of my cock. Her tongue licks its way down my shaft, reaching my balls. My Mum licks and sucks gently on every inch. "No, oh no, please," she said very quietly now, almost a whisper, her hips moving against my hand to increase the friction. Then suddenly she stopped moving and a soft cry left her lips, she had come. I let go of her wrists and removed my finger from her knickers. Instantly she rolled into a foetal ball and cried. I looked down at her, I suddenly felt lost in her grief, I had made her cry hundreds of time before and laughed about it, but this time it was different somehow. I put my arms around. Let me describe her. She was 5.5 ft tall, slim, had colored hair and was wearing proper makeup. She was wearing a white top and floral knee-length skirt.While having the conversation with the couple, I came to know that Rajiv was a businessman and Twinkle sometimes help him in the office when he is out of town or the country. So, I had to come for teaching their son even in their absence. Their servant will be taking care of everything. I accepted the offer.Now I started teaching Aditya daily..