koo-koo box Share definition Flag another name for a vagina ... because well, we all know vagina makes the boys go koo-koo!! Man, check out that koo-koo box !! thats damn good right there !! koo-koo box by Ms. Bitch Plays Rough December 28, 2009 0 0 Get merch Get the koo-koo box mug. Buy Now — $32.95 See more merch