420, 4:20, or 4/20 (pronounced four-twenty) is a code-term that refers to the consumption of cannabis and by extension, as a way to identify oneself with cannabis subculture or simply cannabis itself. Observances based on the number 420 include smoking cannabis around the time 4:20 p.m. (with some sources also indicating 4:20 a.m.) on any given day, as well as smoking and celebrating cannabis on the date April 20 (4/20 in U.S. form). == Origins == A widely discussed story says that a group of teenagers in San Rafael, California, calling themselves the Waldos, because, "their chosen hang-out spot...

The Hitchhiker's Guide to the Galaxy is a comic science fiction series created by Douglas Adams that has become popular among fans of the genre(s) and members of the scientific community. Phrases from it are widely recognised and often used in reference to, but outside the context of, the source material. Many writers on popular science, such as Fred Alan Wolf, Paul Davies and Michio Kaku, have used quotations in their books to illustrate facts about cosmology or philosophy. == Answer to the Ultimate Question of Life, the Universe, and Everything (42) == In the radio series and the first novel...