"i got some acid yesterday and i'm still trippin  or  "god, i can't feel my face because i got acid on it last class period
acid is  a) the really strong drug, known as lsd b) the stuff that burns your face off if you somehow manage to get it there during chemistry class
""i got some acid yesterday and i'm still trippin  or  "god, i can't feel my face because i got acid on it last class period" What is the definition of "acid"?