What 2014 comedy film stars Seth Rogen and Rose Byrne as a couple whose quiet suburban life is turned upside down when a fraternity, led by Zac Efron, moves in next door?

The 2014 comedy film you're thinking of is "Neighbors (Review)," also known as "Bad Neighbours" in some countries. Directed by Nicholas Stoller, the movie centers on Mac (Seth Rogen) and Kelly Radner (Rose Byrne), a young couple navigating the challenges of parenthood with their infant daughter, Stella. Their quiet suburban life takes an unexpected turn when the Delta Psi Beta fraternity, led by the charismatic Teddy Sanders (Zac Efron), moves into the house next door, bringing with it a constant stream of outrageous parties and noise.

Initially, Mac and Kelly attempt to connect with their new, wild neighbors, even joining one of their parties to try and relive their own youthful days. However, the relentless noise and disruptive behavior quickly push the couple to their breaking point, leading to an escalating "prank war" as they try to get the fraternity to either quiet down or move out. The film expertly plays on the generational clash between the responsibilities of adulthood and the carefree, often reckless, nature of college life.

"Neighbors" was a significant commercial success, grossing over $270 million worldwide against an $18 million budget, making it Seth Rogen's highest-grossing live-action film. Critics generally praised the movie, with many highlighting Zac Efron's performance as a standout, marking a notable shift in his career toward more comedic roles. The film's blend of raunchy humor and surprising heart resonated with audiences, leading to a sequel, "Neighbors 2: Sorority Rising," released in 2016, which saw much of the original cast reprise their roles.