I'll help you. I'm sure you're gonna do great." He guided the tip of his member into my tiny mouth. I tasted his precum. It was delicious. I wanted mo...e. I swirled my tounge around the head, feeling my mouth flood with saliva. I bobbed my head up and down on the tip, licking the underside. This wasn't so bad. I continued on this way for several minutes. His hand firmly pushed my head down, making me take more of him into my mouth. I was able to take about five inches before I started gagging.. After an agonizing twenty seconds or so, I heard a soft, "Night, Mom." "Night honey," I responded weakly, just before I heard the door thump shut. After the clang of my bedroom door closing reverberated throughout my room, the silence suddenly seemed almost deafening. I was standing there all alone, hugging my terry robe around me tightly. Running through my head over and over was, "Jill, you just sucked your son's cock."I moved to my bed and slipped in under the sheets, and then buried my head. I can't believe you did this for me. Thanks a lot." He put thewatch on straight away, and he secured the clasp. It fit perfectly. "Igot you something too," he said, going over to his bag. He put the boxI gave him in the bag and pulled another box out of the bag and handedit to me."Happy birthday sis," was all he said.I opened the box and found a silver necklace adorned with diamonds and acharm bracelet. There was a card with it, and it read "To my sister,thank you for finally showing me. The feeling was new as I had never done that with Amy before. I started kissing her cheek, down her neck, and across her shoulders before I released her hand. I rolled her onto her back and removed her bra tossing it to the floor with her shirt as I gazed upon her massive cleavage. Her nipples were large, long and thick like a pencil eraser. They weren’t quite as big as her mothers, but just as beautiful and tempting. Taking one in my mouth I started sucking and twirling my tongue around.