Holla Atcha Koala Share definition Flag To call over the vagina. *Girl with skirt on, legs open*BOY: " Yo lemmie Holla Atcha Koala!" Holla Atcha Koala by Ilovebeefypussy March 12, 2011 0 0 Get merch Get the Holla Atcha Koala mug. Buy Now — $32.95 See more merch