Yookidoo - Flow 'N' Fill SpoutDesigned For Hours Of Fun With Its Endless Stream Of Water! Fun, Durable, And Super Entertaining! Start The Water Flow Show Your Child How To Turn On The Spout By Pressing The Goggles. This Will Initiate A Constant Water Flow. Let Him Turn It On Himself, Teaching Him Cause And Effect. Demonstrate The Effects Of Each Tumbler And Encourage Him To Swap And Change The Tumblers, As Well As To Nest Them In Each Other In Any Order He Chooses. Yookidoo Flow