Surprised (but internally happy about the situation)

Tony heard the footsteps and looked up from the sandwiches he was making in the kitchen, "Grandma, your lunch will be done in a few minutes."

What greeted him was his beautiful grandmother walking towards him, with zero clothes covering her. Her dick was soft but it was larger than his, even when soft and her balls were as big as a tennis ball each.

"Um, grandma, you aren't wearing any clothes," he blushed and looked away from her.

"I thought you'd be more comfortable with another person being nude like you", she then pouted, "I'd go and wear something if you don't like looking at an old lady like me."

"No," Tony shouted, "I mean, you don't look old, you look really beautiful," he replied shyly.

"Really, what part do you think is beautiful?" She asked him with a teasing smile.

"Umm, I like your smile and how kind you're to me," he replied, "I like how you're going out of your way to make a weirdo like me feel comfortable," he looked down.

Betty went to his side and hugged him tightly, "You're not a weirdo, you're my darling grandson, a wonderful young man who's spending his summer looking after his old grandma instead of spending it with his friends."

After a few minutes she pulled back from the hug and saw that both their dicks were erect. Tony's dick was 4 inches long while erect.

"Tony, dear, why don't I help you make the lunch," Betty went to help him.

After a few minutes, the lunch was prepared and they ate it in silence.

Tony went back to his room and Betty sat in the hall, thinking about the jewel and her plans for the future.

Grandma version 1:

https://x.com/DiffusionF64628/status/1779558130545721533

Grandma version 2:

https://x.com/DiffusionF64628/status/1775955603493466593