If I turn my back to Yuki and walk away when she's excited and wants to play, she chases my heels and tries to play-bite my shoes.
. I can only get my crazy girl to calm down if I act very calm and talk to her in a very quiet soothing voice telling her I don't want to play. Now I can just tell her, "Enough. Relax." In the beginning when we first got her, I would just stick my hand in her mouth and leave it in there. If I move my hand around when she's excited, she tries to play-bite it. If I just leave it in her mouth and don't move she tries to move her mouth away or spit my hand out, but she stops mouthing after that
In our early days I used to lead her around the house with my index finger hooked around one of her canines. It's all very gentle, of course, on both our parts, and I only mess around in her mouth like that because she's very gentle with her mouth and won't actually bite down hard on my hand. But it's a quick way to get her to stop playing around and it was fun for us when we were just getting to know each other. Yume will have less bugnut episodes as she grows older. My husband and I called Yuki our "wild child" when she was younger. She acted like a 10 week old puppy when she was 2 years old and had several zoomies a day. She can still get kind of crazy now, but not nearly as much as when she was younger.