Grandma rides on a huge young cock.

Grandma was waiting for her grandson to come home from school. But when he came home, he was different. He was older and bigger than before. He saw her waiting for him and said, "Hi grandma." She looked at him and thought, "I've been waiting for this day for so long." She reached out and hugged him and he hugged her back. He was so much taller than her now. He was a man. Grandma said, "I've been waiting for you to grow up, baby." He looked at her and said, "I'm here now grandma." She kissed him on the cheek and he kissed her back. She said, "Come on inside, I have something for you." They went inside and she went to the kitchen to get him a drink. He followed her into the kitchen and saw her bent over the counter. He thought, "Wow, she's not just sexy, she's hot." He could see her tits in her bra. She turned around and saw him looking at her. She said, "Do you like what you see?" He said, "I do." She said, "I have something for you too." She reached down and grabbed his cock through his pants. She said, "It's all yours now." He smiled and said, "It's all mine?" She said, "Yes." He pulled out his cock and she took it in her mouth. She sucked on it and played with it. He felt like he was in heaven. She sucked on it until he came in her mouth. She swallowed it all and smiled. He asked, "What's next?" She smiled and said, "We can't do anything more until you're 18."