doing handsprings vs flipping

doing handsprings

flipping

adv
  • Fucking; used as an intensifier to modify verbs, adjectives, and other adverbs 

noun
  • The practice of buying real estate, making improvements to it, and reselling it for a higher price. 

adj
  • A mild intensifier. 

How often have the words doing handsprings and flipping occurred in a corpus of books? (source: Google Ngram Viewer )