butt-fucking vs pimple

butt-fucking

noun

  • anal sex 

adj

  • Engaging in anal sex 

pimple

noun

  • An inflamed (raised and colored) spot on the surface of the skin that is usually painful and fills with pus. 

  • Scotch (whisky) 

  • An annoying person. 

verb

  • To develop pimples 

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