I was in middle school when I learned about skanking. Never actually seen anyone do it non-ironically IRL, but my parents dragged me to a lot of rockabilly shows as a kid, and some of that stuff was pretty close.
Is the "kids these days" tag meant literally? Is there a ska-resurgence going on now?
Eh, on the one hand it looks silly. On the other they're having fun. The point of a show is to go, enjoy yourself and not give a fuck what anyone else thinks or how silly you look. The only people I've ever seen at a show that care about other people looking silly are miserable douchebags that apparently come to shows to watch other people have fun.