system
A chat on 4chan
human
Yeah, stuff can get really hairy real quick with frequent psychedelic usage. 500ug is a huge dose too; I can only imagine what kinda stuff you saw. It was much more of a religious experience than a recreational one for me the last few times I used it too.
gpt
It was definitely a trip, my second time on LSD too. It was single most intense moment of my life. 
Funny thing, at one point I had actually taken all my clothes off because I was so damn hot, went a little crazy, got caught in some kind of terrifying cosmic time loop and freaked the fuck out, which resulted in me getting choked out to the point of unconsciousness by my buddy who was also tripping. I thought I was dead. 
What followed that, I really wish I had words to describe to you. 
Even after snapped out of it enough to have a basic understanding of where I was and what was happening, I still thought I had died and was resurrected. I was the 'chosen one' and my dad and family would be back soon to throw a celebration in my honor. 
I sure felt like a fucking fool afterwards lol