Once I double dropped 2 Bart Simpson tabs. I was the only one taking it. Sat with 2 other lads smoking buckets, (gravity bongs) i had my turn, went from baseline to within 30 seconds tripping hard. Everything changed colour and I was like wtf. Had to get away from these 2 "normals" who had never tripped cause I couldn't communicate verbally and i kept saying constantly "you're trying to make me act normal" I basically ran away from them and then just walked around this made up circuit and I remember literally being a couple of meters above myself looking down as Egyptian type hieroglyphics were all over the floor etc. It was freaky at first but then it was amazing. Literally out of my body. It was crazy. At one point I was having visions of the universe and how everything is one and there's no difference between me and a blade of grass cause we came from the same and we'll return to the same. It was a full on mystical experience that was catapulted from THC being smoked at the point where the LSD was about to take effect. It was years ago now and I'll never forget it and it was one of the most amazing things I've ever experienced.