I accidently showed Porn to my first graders!

So I put on a dvd for my kids the other day while I called them back one by one to do some testing. I had bought this dvd through scholastic a long time ago but I had never watched it. I did not preview it before showing it to my class but I did not think that was necessary seeing as how I got it from Scholastic. Anyway, it was a dvd full of various children's books animated like "Where the Wild Things are" etc. So everything was fine until the last story, I had my back toward the screan (we have projectors and surround sound in our classroom so this was a HUGE screen) I all of a sudden heard "And the little boy fell out of his clothes" so I turned around. I saw a little boy falling naked down a hole, at first you could only see his behind, the kids snickered and stuff but not that big of a deal, then the litle boy turned around. All my kids saw full on animated male genitalia. The girls started screaming and pointing "Ahhhh, I can see his wee wee". I hurried to turn off the dvd as quickly as I could. So I showed animated porn to my first graders, I am so going to loose my job :) jk I talked to my principal and i haven't had any parents call or anything so I think I am ok, but I just couldn't believe what I saw on a G rated Scholastic film.