I recently ran across a statement Frank Zappa gave to congress in 1985 on censorship among other topics. While the whole statement is certainly worth reading, I found the following particularly interesting:

Many people in this room would gladly support such legislation, but, before they start drafting their bill, I urge them to consider these facts:

(1) There is no conclusive scientific evidence to support the claim that exposure to any form of music will cause the listener to commit a crime or damn his soul to hell.

(2) Masturbation is not illegal. If it is not illegal to do it, why should it be illegal to sing about it?

(3) No medical evidence of hairy palms, warts, or blindness has been linked to masturbation or vaginal arousal, nor has it been proven that hearing references to either topic automatically turns the listener into a social liability.

(4) Enforcement of anti-masturbatory legislation could prove costly and time consuming.

(5) There is not enough prison space to hold all the children who do it.