it once happened to me on salvia , i had a hit and got transported to this kind of circus , where all this kind of multi-colored-squared-dwarfs where dancing and calling me saying "come with us,come with us",and i dunno if i refused to go or not but , they started boucing inside me and out, it was strange , not that it hurt but i dunno it was very uncomfortable and i was getting dizzy ,while on the outside my mate was listening to me saying " every thing is ok , i control my mind" repeatedly like singing , never again did salvia ,i felt very dizzy and i felt like my eys whore on my forehead and i couldn't close them to rest my mind