big-ass vs whacking

big-ass

adj
  • Very large, expansive, fat, impressive, muscular, intimidating, or important. 

whacking

adj
  • Exceptionally large; whopping (often followed by an adjective such as great or big). 

noun
  • A beating. 

How often have the words big-ass and whacking occurred in a corpus of books? (source: Google Ngram Viewer )