How Do You Spell MOST GOOFUS?
Pronunciation: [mˈə͡ʊst ɡˈuːfəs] (IPA) 
The correct spelling of the word "most goofus" is actually "most goofiest." The pronunciation of this word is /məʊst ˈɡuːfiɪst/. The use of "most" as a superlative implies that something is of the highest degree or extent. Adding "-est" to "goofy" creates the superlative form of the word, meaning "most silly or foolish." So, "most goofiest" is a grammatically incorrect phrase and should be avoided in formal writing or speech. Instead, use "most goofy" or "goofiest."
