[user104658]

These references are everywhere, parents need to be open and honest with their children and help them to put these things in context, not cower away from it out of embarrassment and bury their heads in the sand. Kids are going to encounter this stuff. If they understand the context (essentially, that some people are into some seriously messed up stuff) then they aren't going to be "damaged" by it, or think it's normal.

People wrap children in cotton wool and as a result they grow up ignorant and blinkered. People shut these "taboo" things away and try to hide the key and, in the process, they MAKE them more alluring to curious teenagers who would otherwise laugh and ignore them.