Hippo Harmonizer By Howtoons in LivingPranks, Tricks, & Humor9,2197Save PDFFavoriteIntroduction: Hippo HarmonizerBy HowtoonsFollow More by the author: About: [https://www.instructables.com/howtoons howtoons.org] for more info, contact info@howtoons.com More About Howtoons »Mimic the sounds of nature with this fantastic fart machine.Attachmentswhappyhippof.pdfDownloadHippoHarmonyB.movDownload