In this Friday, April 13, 2018, photo, the Waldos, from left, Mark Gravitch, Larry Schwartz, Dave Reddix, Jeffrey Noel and Steve Capper sit on a wall they used to frequent at San Rafael High School in San Rafael, Calif. Friday is April 20, or 4/20. Thats the numerical code for marijuanas high holiday, a celebration and homage to pots enduring and universal slang for smoking. And the five Northern California high school stoner buddies widely credited with creating the shorthand slang for getting high nearly 50 years ago now serve as the day's unofficial grand masters. (AP Photo/Eric Risberg)
