People like to associate hippies with all the great music of the sixties. You see, the guys playing hippie music often have an even more advanced drug repertoire than their audience. This music was never designed to entertain people. Instead, this stuff is designed to do funny things to you when you're still reeling from the eighteen bovine fertility pills you just ate. Again, go right ahead and listen to it, but don't assume that the rest of us are going to get it just because it held your attention for a few hours when you were sniffing floor varnish.
Hippies like to have fun, but only their way.
The Cause-heads are notorious for this. Other ways of having fun, such as pro wrestling, hamburgers, heavy metal, cigars, violent video games, and John Woo movies are all on the Hippie no-no list. This is where you get to see the proverbial dark side of the hippie mentality. This is where a friendly little hippie kid will accuse you of being a modern-day Eichmann for eating Chicken McNuggets. It's really funny when you think about it.