masha babko sibirianmouse

It seems like you're referring to "Masha and the Bear," a popular animated children's series featuring a little girl named Masha and her friend, a bear. However, "sibiri.mouse" might be related to a specific character or a particular episode you have in mind, or it could be a reference to something else entirely. If you could provide more context or clarify your request, I’d be happy to help you better!