To briefly describe the experience of MDMA/ketamine, I was in a hotel with a friend recently and we were on MDMA and indulged in a lot of ketamine, i.e putting ourselves in and out of k-holes. There was a television mounted on the wall in front of us with a looped fish tank/aquariam on constant stream. I repeatedly entered k-holes which were essentially like extra psychedelic/visual ketamine, before coming out and entering a state of extra visual/psychedelic MDMA. Amongst other things that I mistook for the fish/fish tank were small caricatures of Theresa May and Donald Trump, as per the silly bizarre nature of MDMA hallucinations in general.