Did you ever wonder what girls really like to do with yoga balls? Well, we asked Masako-chan why she brought the big yellow thing with her, to which she quickly replied, "Im gonna work out, silly!" Then there was a pause of silence... followed by a wink and grin from her pretty, feline-like face. The next thing we knew, she skipped the clothing tease we had planned and got completely naked. From there, she sat on the ball, touching her bare crotch to it slick surface. And then, with her legs spread, she began a side-to-side, back-and-forth rubbing motion. So this is what she meant by "work out". Mystery solved!