It was a custom so u put on the original script ,,Grandma and grandson have been sneaking around and fucking in secret. Grandma gets her grandson alone one time, and shares the secret that she's pregnant with his baby. She is barely showing but is excited to watch her belly grow. It's about 4 months in, and grandma's belly is already getting pretty big (use your real belly in a tight shirt or dress). Their is some small movements every now and then, and grandma surprises him with the news that it's twins! She's so proud of him and his powerful sperm, knocking her up at her old age. It's almost 9 months, and the twins will be born soon. They move and kick so much, but grandma is proud of her big belly. She loves carrying her grandson's babies inside her, and she can tell it turns him on. Showing the babies kicking and moving, she teases him with how big her belly is and wants him to cum all over it."