Harvest Fest Share definition Flag a crazy festival where thousands of people get together to trip balls and smoke alot of pot. "man, i went to Harvest Fest last weekend, and i tripped my fucking balls off! LITERALLY! LOOK NO BALLS, MA!" Harvest Fest by Sublimemime January 29, 2009 0 0 Get merch Get the Harvest Fest mug. Buy Now — $32.95 See more merch