: The fraternity retaliates with elaborate and dangerous pranks, such as planting airbags in the Radners' office chairs. In turn, Mac and Kelly plot to sabotage the fraternity’s standing with the university to get them evicted.
: When the noise becomes unbearable for their baby, Mac calls the police after Teddy fails to keep his word to stay quiet. This betrayal triggers an escalating "neighborhood war". Cattivi vicini
In the sequel, Cattivi vicini 2: Sorority Rising , the Radners are trying to sell their house when a newly formed, rebellious sorority () moves into the old fraternity house. : The fraternity retaliates with elaborate and dangerous