I am being serious

My child's world always includes a "prop" of some kind:  boots, a tool, a dress, strange shoes, helmets, and the latest is her new ski goggles.  Since she got them yesterday, she has wanted to wear them to:  watch TV, take a bath, eat her breakfast, lunch, and I am going to go out on a limb and assume they will be part of her "Oscar Party" dress ensemble tonight as well.

She came to breakfast in them this morning and looks right at me and says, "Mom, I am being serious."

What?