Zoo Butt Share definition Flag After a toddler's poopy diaper has been removed and the the area has been cleaned, the butt still smells like zoo droppings. Only a bath will get rid of the stench. I just changed Ziv's diaper but he has zoo butt - give him a bath. Zoo Butt by Mamma E April 3, 2010 0 0 Get merch Get the Zoo Butt mug. Buy Now — $32.95 See more merch