Rumours, dating from the 1970s, claimed that groups of hippies or "teenagers" were licking the psychoactive toads to get high.........................While it certainly cannot be proven that no one has ever licked a toad in California, there is no documented evidence for toad-licking as a regular practice of any group at any time, nor is there any documented evidence that hallucinatory effects can be achieved in this way.
http://en.wikipedia.org/wiki/Psychoactive_toad