Unlike other portmanteau words such as guesstimate and fantabulous, that make you sound like you’re just too dumb to know which word to use, Wonderfacky conveys two distinctive qualities in one ginormous word.
Empirical proof for wonderfacky being a great portmanteau word is discovered when one says the word aloud. (say it now) see what I mean? Even though it's not a “dirty word”-- it totally sounds like one. Right? This makes it hilarious and valuable. See Zorse, Diabesity, and Spork.