early in my teaching career, the Sheriff's Dept presented a "what's the current student drug of choice" program... in a Q&A session, I asked if di methyl sulf oxide (DMSO) was being used to "ingest" any of the drugs... the young officer looked at me, hung his head, commented "that's a new one", and wrote something down on his pad...
I lost at least 3 young girls to GHB