un- read

(verb)
the ability to forget information that you have read once it is deemed \:
a. inappropriate
b. vulgar
c. profane
or d. retarded

being able to un- read something automatically makes it alright to read anything. If it's not okay for you to read it- you can always un- read it!

But mom, I don't remember anything from that book- I unread it.

Mrs. Blaney advised the book club readers to un- read any of the books on the book list that they have already read.