cinnamon baby Share definition Flag noun: The cinnamon colored feces excreted post anal sex. Lighter in color than regular feces due to the addition of semen. "Once he cums in my ass he enjoys eating the cinnamon baby I shit out." cinnamon baby by cr76544 October 1, 2007 0 0 Get merch Get the cinnamon baby mug. Buy Now — $32.95 See more merch