Um... I dunno what to tell you but if you have nipples and you are only using one hand, there is probably nothing special going on. Now if you got six nipples at your disposal, there better be some good stuff happening. If not you got yourself into something and no rating system can help you. Thought it was pretty obvious that six nipples should be far better than one but.... I suppose if you're in a Greek bath house it could be the reverse but someone else will have to expound on THAT. Humor fading fast....