CHICAGO – We’ve gone from apple pie to PB-and-J. No, I’m not kidding. The opening scene of “American Pie Presents: The Book of Love” features a character turning away from internet porn so he can bang his lunch. When his dog ‘joins in,’ he doesn’t stop him. Laughing yet? If you thought this straight-to-DVD franchise had hit the bottom of the barrel before, it turns out they’ve found another barrel below the false floor and it’s filled to the brim with horrible comedy.