Stupid metaphors, second in a series: From Slate's Dana Stevens:

Noise bites off much more than it can chew—an indigestible wad of broad social satire and sincere political commentary, with one too many Hegel references for even this former grad student to endure. But it masticates that wad with admirable vigor.
To masticate is to chew. If the film can masticate the wad -- with vigor, yet -- then it has not, by definition, bitten off more than it can chew.