riot boi Share definition Flag A boy who is into the riot grrrl music, subculture; a male riot grrrl. Frequently a queercore punk. Huggy Bear is a great co-ed riot boi/riot grrrl band. riot boi by Cimmerian Southpaw October 13, 2003 0 0 Get merch Get the riot boi mug. Buy Now — $32.95 See more merch