yappuccino /ˈjæp.ə.t͡ʃiː.noʊ/ noun2 •(slang, nonstandard) Any written or spoken material that is excessively lengthy or lacks a clear purpose.Yummy Yappuccino for Dogs is one of Three Dog Bakery's past creations. — 2023 •(slang, nonstandard) A yapper; someone who yaps. formsyappuccinos