What about the rumor blonde girls are silly?

You got an idea. You loved the romour after that all blondes are silly. Then you concentrated on Anna and thought about the rumour. As you opened your eyes again nothing visible happened. ring ring The schoolbell rang. First hour Maths. You just wrote an exam and you really fucked it up. Your teacher Ms. Angel went in and said "Good Morning Class. I corrigated your exams and must say i'm very proud of you. At least of the most... There are 5 As 10 Bs and 4 Es." You shook your head. There are 4 blondes in your class and as it seems the romour now isn't only applicable to Anna it seems like it's applicable to all blondes in your class. Of course this could be fucking random but the chance was too big. So now why waiting? You got the tests as you get yours you shout "yes" as you've got an A. And in front of you is cute little Anna with an E. You smile trioumphantly...