I've just bought some electrosex toys - well, one toy and a starter pack with the power box, leads, etc. Yay! I'm sooo excited! But it's my first time using this kind of toy, and I don't really know much about it. Has anyone got any tips? I'm especially concerned about safety. Is it possible to turn these toys up so high you cause lasting damage (I'm guessing not, but you never know)? Thanks in advance.