Slagaroo Share definition Flag A female who often engages in casual sex only to hop to the next partner moments later. Slag + Kangaroo (get it?) = Slagaroo 'Oh Nicky you are such a slagaroo' Slagaroo by aralae February 13, 2009 0 0 Get merch Get the Slagaroo mug. Buy Now — $32.95 See more merch