I just saw it last night and I really liked it. Granted I've been accused of having the sense of humor of a 13 year old boy, when I'm a 25 year old woman, but that's besides the point...
Why do people expect action movies to have good plots? Last I checked, action movies are purposefully designed to be mostly about the action, hence the title of the genre. Once in a while an action movie comes out that does have a good plot, but they're few and far between. I'm usually happy if they just have a decent plot, which I think the 2nd Transformers movie had. Great plot, no. Decent enough plot to keep me entertained and not get bored, yes.
And while I agree that Sam's Mom being high was not exactly accurate (I've never seen anyone high be that physically active!) it was still hysterical. It also gives me high hopes of social acceptance at some point in our generation, if they can include such an obvious pot reference in a movie that has nothing to do with pot.
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