Rithy is a term used to describe marijuana, weed, reefer, electric lettuce, cannabis, ganja, Mary Jane or any derivatives. The term originates from the name Michael Rithjin - a fictional character named by Ron Burgundy in a movie best watched high, Anchorman.
You got any rithy? Let's get rithied. Where my rithys at? I got so rithied last night and ate four cans of beans. Rithy alert.