So one day I had half an MDMA pill and a line of coke. I was having a drink in a bar when the MDMA started to take off (it was strong) and some asshole pointed to something behind me and while I turned around, proceeded to spike my drink. I took a sip and it had a weird taste but I attributed it to my pill (I was high af).
Fortunately I was having a non-alcoholic drink so I guess it didn't have the intended effect on me. I started experiencing weird visual glitches (like a broken simulation) and eventually my own voice went down in pitch as I was talking (like a very pronounced Doppler effect). It reminded me of the descriptions I had read but never experienced myself of a K-hole, but like being on the verge without falling completely into it. Like the world around me had turned into a very weird film.
I felt somewhat impaired but nevertheless was able to walk. I went out to get some air and afterwards had a light headache.
Days later I took the other half of the pill and it was regular MDMA, albeit very strong. I put the pieces together and understood this guy had spiked my drink, but as I was on stimulants instead of alcohol he wasn't able to take advantage of me. I assumed it was K or something similar, but it didn't feel like the trip reports I have read since.
Any idea what could it be?