Each generation has things that make them unique, and collective memories that bring them all together. That's especially true for people who were born between the 1960s and 1980s, who spent a lot of time together playing outside and exploring the world by bicycle. U/Ruffffian asked the latchkey generation about the things that define them, and people had some excellent answers. Some people wrote in about the fashion trends of the time, like poofy hairdos teased to perfection and sprayed with a…