thiccoing Share definition Flag Mostly used by the twitch streamer sagaxd, to define activities giving you thicc such as consuming extreme amounts of food in order for get big thicc. ChickenQuacks: Hey thicco, what you doing with that big ol' jello butt of yours? sagaxd: thiccoing thiccoing by sagaxd February 8, 2020 0 0 Get merch Get the thiccoing mug. Buy Now — $32.95 See more merch