Everybody does lunch breaks differently. Some opt to bring their own lunch and eat at their desk. Others might head on down to the company cafeteria for some grub. If you live close enough to home, you might even get to come back to your own kitchen to whip something up. However, if you're feeling fancy (or your paycheck allows it), you might just leave your office and get a meal from a local restaurant or fast food joint.
You might see many similarly dressed dudes out and about if you're out in a financial district during lunchtime on a weekday. They are white-collar workers, and they all have the same little uniform. In a world where you rarely see adults all wearing the same outfit, it can be a unique sight to those not in a more formal office. One Twitter user saw some finance dudes eating Chipotle by themselves and went so far as to call it "dystopian." Sounds like an exaggeration to me.