Sandpaper Baby Share definition Flag A baby who has really scratchy skin. When the baby grows up, its skin will be really soft as an adult. His skin is soft now, but when he was little, he was a sandpaper baby. Sandpaper Baby by Thomas Winters November 18, 2010 0 0 Get merch Get the Sandpaper Baby mug. Buy Now — $32.95 See more merch