Funny joke: How did Grandpa marry you, a wrinkled old lady?

How did Grandpa marry you, a wrinkled old lady?

Grandma: Honey, eat some meat quickly. ...

Grandson: I won't eat, I won't eat …

Grandma: You can't grow up without eating meat. How can you not marry a beautiful girl in the future?

Grandson looked at grandma: I know, grandpa certainly didn't eat meat when he was a child?

Grandma: Honey, why do you say that?

Grandson: Otherwise, how could Grandpa marry you, a wrinkled old lady? ...

Grandma: ...