Wabbagooboo Share definition Flag Word used to annoy your sister/ cousin. In this case, katie. Me : hey kate... Her : what? Me : wabbagooboo. Her *attacks me* Wabbagooboo by Donnie- man July 6, 2019 0 0 Get merch Get the Wabbagooboo mug. Buy Now — $32.95 See more merch