Boy this is just stuipid

Ok, I was in class reading American Hardcore, because my LA Teacher said that we had to independitly read for some ammount of minutes. I had to get something outta my book bag so I place my book mark in my book and close it , if you guys remember the book cover has Danny Spira of Wasted Youth on the cover bleeding like crazy, anyways I closed my book. I get my log sheet to keep track what page I started and what page I ended on and what I read so far, oh and I think I grabbed a pen (like what I got matters) I sit back up, and my teacher was standing right there when I sat up she has the biggest glare on her face then angrily she asks, "What is that?" she looks at the cover a little bit, then she said the following" Good lord that is the worst cover of a book I have ever seen, what is this book about?" I say "It's a tribal history about the hardcore scene in the 1980's it's all about the rise and fall." she says "well apparently if it has a cover like that it must be a very horrible book". I pause for a second to think of a comback, after 4 seconds I say "well if you allow books about adolf hitler to be put on the shelves of our library in a school full of religious and especially "Jewish" people, and books about the klu klux klan in a school full of blacks, then why would you have to say anything about this book." she pauses then walks away. I never felt more accomplished in my life