She is begging to go swimming.
She took off her dress. She peeled off her diaper and is looking for her swimsuit. Upstairs she went in search of aforementioned suit.
Dad says to her: You're naked. (He is Master of the Obvious.)
She responds: I want to go swimming.
Dad: You're going to go swimming naked?
She: I am going to go swimming in my buns.
Good to know that buns are now part of a wardrobe!