penile glans vs warhead

penile glans

noun
  • The glans penis 

warhead

noun
  • The glans penis. 

  • The part of a missile, projectile, torpedo, rocket, or other munition which contains either the nuclear or thermonuclear system, high explosive system, chemical or biological agents, or inert materials intended to inflict damage. 

How often have the words penile glans and warhead occurred in a corpus of books? (source: Google Ngram Viewer )