So, I have come up with a new term: "brain sorbet."
A book or movie is "brain sorbet" when you use it cleanse your palate. So to speak. For instance, I am reading the new Agatha Raisin mystery right now. It's fluffy and uncomplicated and you can read it in a night. I sometimes read books like that in between more complicated works of literature just to give my brain a rest. You know, it's "brain sorbet."
My friend Greg says that works with movies too. Sometimes you need a fluffy silly little film in the middle of watching a bunch of complex ones just to give your brain a rest.
We all need a bit of fluff now and then.