My sisters never had to “let” me see them naked as if to satisfy my curiosity or to display themselves to “shock” me. Living as a large family in a small house.
She turned on the water and ignored me. I was pretty mad. But then I heard her call out, telling me to come in. I've never seen my sister naked.
She came to me a few days later and I had managed to print pictures of naked men with good erections. My sister wanted to see them.