Well, I think poptart suits me for a buncha reasons.
1. I love poptarts, especially if they have marshmallow.
2. I love pop things. Pop culture, pop music, pop everything.
3. I like it when people affectionately address each other with poptart as a pet name. (ex. Relax, poptart. Be free, little poptart. Cheer up, poptart).
4. It's a bit oxymoronic -- tart suggests a sort of bite or sharpness to something otherwise sweet and nice.
And why "miss"? Because I'm a young lady, that's why! ^^;;