Okay, so I had a few scary experiences on Salvia, but this one tops everything for its absurdity factor. One time I dropped a MDA pill thinking it was regular MDMA in a goa/psytrance party and ended up in a seperate room filled with christian missionaries. I told my friend (who's smashed on shots of absinthe at this point) to take me to the psy-help room where they give you vitamin water and snacks and help you calm down if your trip is too intense. He mistook the door (it said mental-help on the door) and pushed me into a room.
For some reason they had some weird bible-study group there. Don't even ask me, I still have no fucking idea how this was organized into a goa party. First I thought I'm in the right room, so I told them I took a pill and I'm feeling a bit weird. (I didn't have any experience with MDA prior to this.) They had mostly people over 60yo there and a few youngsters my age (20ish). Instantly they grabbed my hands and sat around me in a circle and started praying to exorcise the devil out of me. I don't remember much, but the carpet in the room. Holy shit, it was intense. It had this orange-yellow color with a spiral pattern, and it was moving and swirling like there was no tomorrow.
Eventually I got up and started going out of the room. The exact moment I opened the door to escape from that madness, my friend opened it from the other side and stepped in. (Later he told me I was gone for too long and wanted to check on me.) The same thing happened, they grabbed and sat him down in a seperate circle. I couldn't even really process what just happened, but the next thing I remember is that I'm sitting again with a younger guy talking to me. He kinda realized I was tripping balls by this point and started to loosen up on the religious agenda. This made me come to my senses a bit more and I remember telling him I'm not a believer which eventually got us talking about Hitler and his actions perceived by his religion.
I don't remember much of that either, but I calmed down a little, thanked him and started my mission to escape this weird trip again. I got up, walked over to my friend's circle of missionaries, tapped his shoulder and told him we're going. This fucker turns to me and says with the most ambitious look on his face "Let's meet in the hall, I need a bit more time". So I'm standing there frozen for a few seconds, but I leave him in there and finally get out of the room. A couple minutes pass by, and he comes out. We look at each other like WTF was that, when I ask him why the hell did he not come out with me.
This drunk motherfucker stayed behind to try and persuade our temporary christian-to-the-soul grandparents that god doesn't even exist. We had a good laugh back then and every time this story comes up since.
Once I stuck in a 7 second time-loop after smoking Salvia, but that wasn't really interesting. Also first time dropping acid made me face my traumas, like the death of my grandmother and my relationship with my family. It was a scary experience, but I learned a lot from it, plus I had really good trip-sitter friends who acted like professional psychologists - they guided me well and it helped me process these traumas.