term of endearment for a girl who cannot refrain from crackin jokes in any setting. the humor best displays itself in awkward situations, and generally makes for memorable first impressions. Of course, this un-bridled humor leaves her second guessing herself at times because she would never want to offend, but this feeling never lasts more than a few minutes. She's too sweet to mean any harm, so it rarely backfires as pissing someone off.
Hey, have you met that girl Stephanie?
Yeah, she's a nutball!