batty boy vs shirt lifter

batty boy

noun
  • A homosexual man. 

shirt lifter

noun
  • Synonym of bottom: a homosexual man who is penetrated or prefers to be penetrated during anal sex. 

  • Used other than figuratively or idiomatically: see shirt, lifter. 

How often have the words batty boy and shirt lifter occurred in a corpus of books? (source: Google Ngram Viewer )