Review: 'Grown Ups 2' refuses to leave the sandbox

'Grown Ups 2,' with Adam Sandler, Kevin James, Chris Rock and David Spade, shows a flash of maturity but still relies on juvenile humor.It is just a few minutes into "Grown Ups 2" when star Adam Sandler is peed on in the face by a deer. How one feels about that -- is it funny, is it cheap, is it a weird curiosity? -- will likely be an accurate litmus test for responses to the rest of the film.