As much as Stanley Uris is portrayed as a shrinking violet throughout the film, he gets one scene of serious retribution in the extended version of his bar mitzvah monologue. In the original edit, his words are limited to the part about how kids believe they'll be protected when they're young, a segment that becomes partial voiceover to showcase the rest of the Losers doing their individual activities across town.
In this extended version, though, he really lets his father and the rest of his synagogue have it by laying out the problem with adulthood: "You wake up suddenly not caring about lives outside your own. Nothing going on outside your front door matters anymore. You separate yourself from anything that might not matter to you: neighbors, family, your friends."
His words not only outline the grown-up indifference that's such a disease in Derry, but he also foreshadows the group's eventual reunion, saying, "When you're alone as a kid, the monsters see you as weaker, and they start to come for you and you don't even know they're coming for you until it's too late."
His father steps in to try and stop his forceful lecture, but not before Stanley slips in with this biting finish line: "Becoming an adult isn't about being able to vote or being able to drink or drive. Becoming an adult, according to the holy scripture of Derry, is learning not to give a sh**." Perhaps not surprisingly, the only one who claps for him is Richie "Trashmouth" Tozier.