When I was in my late teens and early 20s, people thought I was on drugs, especially something called "crystal." This was in the mid-'80s, and I have no idea if that is the same thing as today's crystal meth. I wouldn't even know what any of that stuff was if it was sitting right in front of me. Not then, and not now.
I don't need recreational drugs. I am always like this naturally.
BTW, before I got diagnosed with (or heard of) AS, I always used to wonder why it seemed like everyone else in the world acted like they had one, maybe two, beers in them, because I noticed so much stuff they didn't notice and because my sensory input felt so much more acute than theirs.