Grinding at nightclubs?

When the song by Pink called "U and Ur Hand" came out I was in love with it. That song perfectly describes a girl trying to go out, dance, and have fun without being groped. It seems to be that busier and more popular clubs have more of this going on. I used to have a problem with it because I was just so use to being totally nice and not want to make a scene when I guy was rubbing up against me when I didn't want him to. Now I just give him a mean look right in the eyes and turn away. If he persists then I get a bouncer. (I also learned that this is a better alternative to punching the guy which can get you kicked out of the club.) Just remember that no matter what, it's your body and only you say who does or doesn't have permission to touch it.