Chaffin Head Share definition Flag An abnormal condition where you're head swells up to the size of a watermelon. "Dude, your head looks bigger today" "I know bro, I've come down with a mean case of Chaffin head" Chaffin Head by Big Pimpin Julius October 25, 2011 0 0 Get merch Get the Chaffin Head mug. Buy Now — $32.95 See more merch