I've done shrooms a few times but never a huge dose, and I stopped when I started getting ****ed up dreams and this feeling where it felt like i woke up inside my dream and couldn't wake up to real life, so I can't really compare cid to it. But for me acid is pretty hard to describe, it's so different to anything you can experience in everyday life. It's so twisted, and it screws with your perceptions of things so hard. When most people think of acid they just think of swirly colours and like fractals and stuff, but it's the mental part of it that is either the most fun or the most scary depending on what the trip is like.
I've had moments where I've been standing at an esky while tripping trying to decide whether to have a red bull or a beer and it's felt like my entire life has led up to this decision and the fate of the world rests upon it. It's because the cid can magnify your thoughts and feelings so much.. at that time I actually truly believed that whether I chose to drink beer or red bull would affect the world in a huge way. Another time someone asked me "hey dude how much is left in that can of coke, can i have some?" and i stood still for about half an hour trying to guess down to about a millionth of a decimel place exactly how much coke was left in the can.. the guy had walked away after about 30 seconds of me saying "well i guess there's about 7/9s.. no.. about .788 not hat's not right either umm." etc. On the other hand i've had times when i've been in a club and every single person starts to look like a devil and i'm convinced i'm only seconds away from being set on by this huge mob and carted down to hell.. scary stuff.
If you turn your mind inward on acid you can start having these stupidly complex and irrational chains of thoughts, but the acid makes you think it makes perfect sense. What happened to a mate of mine once was this (he explained it to me later after i caught up with him): We were sitting at home tripping pretty hard with the tv on, and he started looking at the TV and thinking how well manafactured it was. How it's screen was perfectly aligned and the side's were all shiny, and how good a job the guy who built it had done. Then he started thinking how all the factories now use robots to put this stuff together, and that the poor old man who used to build these TVs was out of a job. He probably had a family and they were starving now because they have no money and can't buy food. They need food! It was at this point my mate jumped up and started raiding the fridge for food, and was about to run out the front door with it before I stopped him and asked him wtf he was doing and he replied "The TV man's family needs food!!". I had nfi what he was talking about until I could ask him about it when we had come down.
But to be honest I don't really recommend it to people with SA or other mental illnesses like that. The way the drug magnifies your negatives thoughts and feelings, if you're already terrified of a lot of people because of SA, you will end up in a real bad place on acid, and having a bad trip can really do some lasting damage so be warned...
