I hope you weren't serious when you posed the question of 'what is LSD' ? Assuming you were serious, here is an answer.
LSD (lysergic acid diethylamide) is one of the major drugs making up the hallucinogen class. LSD was discovered in 1938 and is one of the most potent mood-changing chemicals. It is manufactured from lysergic acid, which is found in ergot, a fungus that grows on rye and other grains.
LSD, commonly referred to as "acid," is sold on the street in tablets, capsules, and, occasionally, liquid form. It is odorless, colorless, and has a slightly bitter taste and is usually taken by mouth. Often LSD is added to absorbent paper, such as blotter paper, and divided into small decorated squares, with each square representing one dose.
"There are two major products that came out of Berkeley: LSD and UNIX. We don't believe this to be a coincidence."
I wonder if this was the type of hotel the Eagles were thinking of when they wrote 'Hotel California' . . .
Mirrors on the ceiling Pink champagne on ice And she said We are all just prisoners here Of our own device And in the master's chambers They gathered for the feast They stab it with their steely knives But they just can't kill the beast Last thing I remember I was running for the door I had to find the passage back to the place I was before Relax said the nightman We are programed to recieve You can check out any time you like But you can never leave