banana hammock vs butt-huggers

banana hammock

noun

  • A male thong. 

  • A pair of skimpy swim briefs for men. 

butt-huggers

noun

  • Men's briefs; underwear. 

  • Skin-tight shorts. 

How often have the words banana hammock and butt-huggers occurred in a corpus of books? (source: Google Ngram Viewer )