Granted, such neighborhood folk might have reason for concern if neo-Nazis are moving in or if high-target mobsters under the witness protection program suddenly show up. Then again, those might not be as bad as if an entire fraternity, wild parties and all, suddenly took up residence next door. While I don't know if that's even allowed in reality, it's the catalyst for all sorts of outlandish shenanigans, bad behavior and an inner-generational battle of wills in the simply titled comedy, "Neighbors."

As directed by Nicholas Stoller from a script by Andrew Jay Cohen & Brendan O'Brien, the film definitely isn't for kids (it earns its R rating with ease and then some) or for easily offended adults as evidenced by the opening scene. That's where the married couple played by Seth Rogen and Rose Byrne are trying to engage in sexual relations but he's distracted and a bit weirded out by their infant daughter watching them, although likely not realizing what they're up to.

It's then that we realize this is going to be the story of former partygoers who've found that lifestyle shelved now that they're parents with a little one under their care. The childish behavior segues over into the plot development of having the Delta Si frat boys move in next door. Their leader (Zac Efron continuing to distance himself from his early, clean cut success in the biz) is determined to have their class go down in the annals of history for their particular frat.

That leaves the couple -- and particularly Mac -- torn because they know they're supposed to be the responsible parents but they really want to go and party with the guys. He and Kelly do just that, as something of an early peace offering (including the requisite token gift of some joints) between the two parties. That peace ends when Mac reneges on his promise not to call the cops should things get out of hand, thus starting the battle of wills and wits between the households.

What follows is fairly predictable and definitely sophomoric at best. That said, it does generate some really big belly laughs along the way, as well as some cultural asides that are humorous in their own right (such as Efron and Rogen's characters debating and imitating who best played Batman in the movies). And there are a few warm moments scattered among the naughty material, while Rogen and Byrne have good chemistry together (and some, but not all, parents will be able to identify with the movie couple's new parenting and lifestyle travails and sacrifices).

But, although not terribly surprising, the film and its male characters are way too obsessed with male genitals, even if that might fit in well with the mindset of the majority of the film's target audience. And most of the rest of the humor also comes from the XY mindset, including a gross-out bit about "milking" a lactating mother so that her breasts (apparently) won't burst.

The biggest sin, though, is that the screenwriters aren't clever enough in the actual "battle" plans from both sides. The possibilities are endless, but some of the material (including a few extended cameo bits featuring Lisa Kudrow as the college dean who's only concerned about PR) simply isn't as inspired as it should have been. And the ending -- while certainly frenetic -- is a bit of a letdown in terms of creativity and inspired looniness.

As long as you don't mind the decidedly adult material, "Neighbors" provides for some spurts of stupid, but big belly laughs as well as occasional bouts of clever and amusing material. But I don't know how long you'd want it living next door. It rates as a 5 out of 10.