zubstitution

Substituting the letter 'z' for an 's' in marketing, or more commonly, rap, to try to sound ultra, only the word is actually pronounced with an ssss and not a zzzz phonetically.

Synonym: Zpelling

"Did you see that sign that said Krazy Katz? That is some bad-azz zubstitution.

by DMD0cal February 4, 2010