lay pipe vs roll around

lay pipe

verb
  • To have sex. 

  • Used other than figuratively or idiomatically: see lay, pipe. 

roll around

verb
  • To indulge in sexual intercourse (with). 

  • To move about on the ground while rotating and turning one's body. 

  • To be considered, without much coherence, in someone's mind. 

  • To laugh very heartily. 

  • To become due and take place at a certain time. 

How often have the words lay pipe and roll around occurred in a corpus of books? (source: Google Ngram Viewer )