Meatballs III: Summer Job

Meatballs III Summer Job is a 1986 film that was the third installment in the Meatballs film series, and the first in the series to be rated R. Unlike Meatballs Part II, this film follows Rudy the main character from the first Meatballs, grown up played by Patrick Dempsey and working on a summer job for an angry boss named Mean Gene. Unlike the first two movies, this one is not set at summer camp, but rather at a nearby marina.

Source: Wikipedia