born on third base but believes (one) hit a triple
born on third base but believes (one) hit a triple
Said of one who was has enjoyed the benefits of a privileged upbringing but attributes their success solely to their own efforts. A: "His rich daddy set him up with a cushy executive job and all the resources he needed to make the business a success. From the way he goes on about it, though, you'd think he built the whole company out of nothing." B: "Just another guy who was born on third base but believes he hit a triple."