PCP
Designed as an anesthetic for humans, it worked well in the O. R., but the folks in Recovery started having a few problems.  Usage on humans was unlicensed, but its use in Veterinary medicine continued.
	Personally, PCP was a favorite of mine forty years ago.  If you want your brain disconnected from the rest of your body, Acid is the MX  missile, PCP is the Hydrogen bomb.  I think the real problem  with PCP, is that maybe four out of ten times you get a good trip.  The rest will leave  you so confused you won't know your name, leave you with serious injuries, and you just may act stupid enough to get yourself killed.
Hey, I just bought some THC!  Larry G,
I'll take it before you kill yourself.