Joke

It's the last full day of school, and there was an entire class of 5th graders found dead. The teacher was arrested and accused of 1st degree murder for all of her students. The police combed her room for any weapons. Found none. Looked for poison in the punch and cookies. Found none. Checked her history for any acts of violence or violent crime. Found none. But just as the situation looked bleak, they finally found out what killed the kids. THEY WERE WATCHING THE 2011GREEN LANTERN MOVIE!