WHY ARE THESE HOLY?

Why have we chosen to "holify" these particular things?
  1. SHIT!
    C'mon!
  2. COW!
    In India I suppose
  3. TOLEDO
    What's so special about Toledo? It's got the Toledo Museum of Art, but does that qualify it for sainthood?
  4. MOLY
  5. MACKERAL
    Just another fish, right? Wrong!
  6. CANNOLI
    Hey, I love cannolis but I don't pray to them
  7. GUACAMOLE
    I get this one, though
    Suggested by   @bjnovak
  8. Smokes!
    Suggested by   @mallofamanda
  9. Hell
    Suggested by   @robyn