in some circles used as a a name for the cocktail of ghb and dxm.

bad news in a major way, altough not in the brain damage/fear of death sense, but in the psychological trauma sense. It's a very powerful mixture, there is a strong synergy between the two chemicals, centered around dopamine activity. DXM is a dopamine reuptake inhibitor, and GHB causes a massive dopamine release. When these two effects are combined, your synapses are flooded with dopamine, and strange (er) things start to happen in your head.