Cherry means that everyone has issues, even her privileged Soc friends. Cherry realizes that Greasers like Ponyboy think Socs have pleasant, carefree lives. She explains to Ponyboy that Socs experience a significant amount of peer pressure and must maintain their reputations at all times. She compares her peer group to a "rat race" and tries to make Ponyboy realize that being a Soc is not as easy as it seems.
Answer: Ponyboy says that sunset line to Cherry in chapter 3. Cherry is about to leave with a group of Soc boys in order to prevent a fight from breaking out in front of her. Just as she turns to leave, Ponyboy says, and he is a big man
