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Jennifer Lopez Tells Us How To Ward Off Creepy Neighbors

Rule #1: Don't share your cookies with anyone.

Reporting by Nicole Pajer

Jennifer Lopez's cookies bring all the boys to the yard. Well, maybe just one boy -- and he's kind of a psychopath.

That's pretty much the premise of JLo's latest thriller "The Boy Next Door," which stars "Pretty Little Liars" hottie Ryan Guzman as Noah, Lopez's charming next door neighbor-turned-hookup. Unfortunately for Lopez's character Claire, their brief moonlit tryst leads to a dangerous obsession.

Speaking to MTV News at the press day for the film, Lopez dished on why Noah's nice guy act was so convincing -- and what you can do to ward off your own boy next door.