Stay away from hard drugs guys, whats wrong with a nice joint and a few episodes of Azumanga? 
we never brought up any hard ones. LSD = harmless. there has only been one case of death due to LSD overdose in witch the guy INJECTED over 30 times the (predicted) lethal dose of LSD, and later died of hypothermia 
the dose was 320,000 µg . thats micro grams. a typical dose id say is anywhere from 30-100 µg, taken by the mouth
They killed an elephant once with acid see below
What happens if you give an elephant LSD? Researchers solved this mystery on Friday 3 August 1962, when Warren Thomas, director of Lincoln Park Zoo in Oklahoma City, fired a cartridge-syringe containing 297 milligrams of LSD into the rump of Tusko the elephant. With Thomas were two colleagues from the University of Oklahoma School of Medicine, Louis Jolyon West and Chester M. Pierce.
The dose was about 3000 times what a human would typically take. Thomas, West and Pierce figured that if they were going to give an elephant LSD they'd better not give it too little. They later explained that the experiment was designed to find out if LSD would induce musth in an elephant - musth being a kind of temporary madness male elephants sometimes experience during which they become highly aggressive and secrete a sticky fluid from their temporal glands. One may also suspect a small element of ghoulish curiosity was involved.
Whatever the reason for the experiment, it almost immediately went awry. Tusko reacted as if he had been shot by a gun. He trumpeted around his pen for a few minutes and then keeled over. Horrified, the researchers tried to revive him with a variety of antipsychotics, but about an hour later he was dead. In an article published four months after the event (Science, vol 138, p 1100), the three scientists sheepishly concluded: "It appears that the elephant is highly sensitive to the effects of LSD."
The experiment instantly made headlines. Faced with a public relations disaster, the scientists protested their innocence. They had not anticipated the elephant would die, they insisted. In their experience, LSD was a powerful hallucinogen but rarely fatal. West and Pierce helpfully noted that they themselves had previously taken the drug.
Thomas tried to find a silver lining. They had learned that LSD can be lethal to elephants. So perhaps, he mused, the drug could be used to destroy herds in countries where they are a problem. For some reason, his suggestion has never found any takers.
