In hopes this thread doesn't get locked or closed or deleted again, here's one of my observational observations, though not necessarily funny or humorous...
It seems like since the 1950s, each decade that has passed has had it's own, unique sense of fashion and style... for instance: the 1950s was when rock and roll was starting to come into play, there was the wet and slick-backed hair and stuff; the 1960s, everything was all "flower power", lots of tie-dye, peace and love kind of thing, hair was long and wavy; the 1970s was very psychedelic, polyester shirts with long collars, bell-bottom pants, the disco era, shaggy hair, mustaches, etc; the 1980s was a very "fab" time, lots of bright neon colors, lots of glitz and glam, big puffy hair and mullets, stuff like that... the 1990s, the 2000s, and even the 2010s thus far are kind of a blur as far as all that stuff goes: with a couple of obvious exceptions, like in the mid-90s when Old Navy (I think) tried to make bell-bottoms cool again by marketing them to kids, there's really only been two kinds of styles that have marked the past two decades or so and show no signs of disappearing anytime soon, and it depends on the crowd you hang with, you've got either the whole skateboarder thing going on with the graphic tees, torn-up jeans, chains hanging out of your pockets, pants worn below the butt, etc; or the whole goth/emo/punk/everything's black with red or purple, big stripes, or fishnets, etc. I mean it's always easy to pick out past decades based on that kind of thing, but it's getting hard to distinguish the last two decades.