Old Yeller Rule Share definition Flag Old Yeller Rule is when something or someone has to be taken out back and shot, for something extremely cringey. Bro, josh is into furries, his parents should have did the Old Yeller Rule a long time ago. Old Yeller Rule by Titan_ March 27, 2021 0 0 Get merch Get the Old Yeller Rule mug. Buy Now — $32.95 See more merch