Isn’t it just the most amazing hole?
She can swallow an apple whole. And spit it out whole. And swallow it whole again. At will.
You can’t do that. She can put the whole thing inside her body, even carry it around all day if she wanted to. Compared to her vagina, your dick is pathetically small.
She gets to know what that feels like and you don’t, because she was born with the biggest, most amazing hole in the body, while you were born with a tiny little flesh stick that doesn’t do anything special.