But that said, it would be a real shame if the film ended up with an "R" strictly because Carl can't control his tongue. That complaint will sound nitpicky to some, but experience tells me that if the swearing is enough for me to notice, it's enough to bother some viewers who might otherwise find the film delightful.
That element of the film is a bit like having three mouthfuls of a great entrée and then getting a salt bomb in the side dish. It might not be enough to ruin the whole meal, but it sure is disappointing when you thought you were well on your way to four stars.
Kenneth R. Morefield is an Associate Professor of English at Campbell University. He is the editor of Faith and Spirituality in Masters of World Cinema, Volumes I & II, and the founder of1More Film Blog.