The coinage zazzification is my expansion of the American slang term zazzy (jazzy, sexy). I use it to designate the strong tendency, in American English, to render words slangier than they already are by substituting a Z-sound (sometimes written ZZ) for other consonants.
Wescott, Roger W.
"Zazzification in American Slang,"
Word Ways: Vol. 20
, Article 8.
Available at: http://digitalcommons.butler.edu/wordways/vol20/iss4/8