Yeah I had that too on one occasion. That's when you really know you went too far. I took a whole pill and forgot I took it (what the fuck, I know). At the point I took the first whole one I was already rolling on half of one. And so about 20 minutes after that whole one I dropped a whole one again thinking I didn't take one 20 minutes before that. My mate, seeing this, screamed as I put my hand up to my mouth "are you crazy, you just took one?!" but it was already on it's way down. They both hit me like a ton of bricks both at the same time about 30 minutes after that, I went from completely fine to completely fucked in 5 minutes. 10 minutes after that I was not making sense anymore. They were really strong pills, just below the 200mg mark so that night I took about 100mg first and then an hour after that by mistake dropped about 400mg at once (when I read these numbers, I punch myself in the head again for being so stupid).
I was dancing on the dancefloor. Next thing I know, without knowing how I got there, I'm sitting on a chair in the toilet with strangers around me asking "are you alright?" and pouring water over my head to cool me down. Apparently I just ran off at some point and my mates couldn't keep up and lost me. Next thing I know I'm cooling off outside with that same group of strangers, again not knowing how I got there, I just blacked out and jumped from the chair in the toilet straight into the middle of a conversation I was having with someone. And I must've made sense in the time I blacked out because she was talking back, we were talking about the meaning of life, not even the easiest of topics. Next thing I know I'm dancing with mates again and didn't see the group of strangers anywhere anymore. And I had already explained to my mates where I had been the past hour or so but I don't remember I explained, did that while I was blacking out too. It's a really freaky feeling. You don't worry about it at that time but it really got me thinking afterwards about how irresponsible that was. Since then I always consciously look at my clock when I take a pill and think to myself "it's now <the time>, you have just taken a whole pill, remember this". Just so I don't make that mistake again. These blackouts where indeed also accompanied by short periods where I didn't even know who I was anymore or didn't recognize my mates. To me it felt like I was asleep and all of the sudden woke up in the middle of the dancefloor surrounded by strangers (who were actually my mates) not knowing how I got there or what the fuck I was doing there. While blacking out I had very very vivid intense dreams about random shit and later in the night when it settled down I experienced intense hallucinations (on par with a strong dose of acid). I saw bats coming out of the speakers, gnomes running around on the ground in the gras which was in reality a wooden floor, the leaves of trees forming little hands and waving at me, people with facial tattoos being drawn on as I looked at them, people with luminescent glasses on, walls melting and breathing, golden chariots that rolled over the heads of the crowd, even auditory hallucinations like a jumbo-jet taking off, people whispering when in reality the music was almost deafening (very weird that one, I could hear whispers through 110dB of music, hard to describe but it was like the music was there but my mind filtered and muted it a good bit and plucked the whispers out of the music. And so on. That hallucinogenic part was very enjoyable
and weirdly enough since that night I almost always hallucinate when I roll, if I smoke enough weed, no matter what dose I do, I've had acid-like hallucinations off of 120mg. If I don't smoke weed I don't experience any hallucinations and before that night I never experienced anything even remotely like it. It's like a switch was flipped that night...