According to the story, the Waldos would meet up after school at 4:20 pm to smoke marijuana. They would use "420" as a code word to refer to smoking or to the time they would meet up. The origins of the term are somewhat unclear, but it is thought that it may have been derived from a police code for marijuana use, or from the number of chemical compounds in marijuana.
The term "420" eventually caught on among their friends and in the cannabis community, and it has since become a cultural phenomenon associated with marijuana use. Today, April 20th (4/20) is celebrated as a holiday for marijuana enthusiasts around the world, with events and gatherings taking place in many cities and countries.
The origins of 420 may be somewhat murky, but the term has come to represent a broader cultural movement around marijuana use and legalization. As attitudes towards marijuana change and more states and countries legalize its use, the significance of 420 as a symbol of marijuana culture may continue to evolve and change over time. However, for many people, 420 will always be a symbol of the freedom and enjoyment associated with smoking marijuana with friends.