Short of fart gags, the “humor” in this trailer for Paul seems as low and crude as a film like this can possibly get. The bird-eating at the end is the only moderately amusing bit in the whole thing. What an apparent comedown for Greg Mottola (Superbad, Adventureland), once a cool indie-minded director and now the manager of a dog pound, leading movie culture down the ladder toward an across-the-board mongrelization of comedy.