Who cares what you think?
It's actually not a question of what I think. It's about the fact that Billy Bob didn't write the script. That is factual and has nothing to do with what anyone thinks. The writers were Glenn Ficarra and John Requa. You can untwist your panties now.
Just because an actor does not get a writing credit does not mean they didn't write a line, or suggest one. Some times things make it in off script but that doesn't get you a writing credit as that would change royalties.
I am not saying in this case it happened but the lack of a writing credit is not proof of who actually put a line in a movie.
