flog the log vs milk

flog the log

verb
  • To masturbate. 

milk

verb
  • To single-mindedly masturbate a male to ejaculation, especially for the amusement or satisfaction of the masturbator rather than the person masturbated. 

  • To make excessive use of (a particular point in speech or writing, a source of funds, etc.); to exploit; to take advantage of (something). 

  • To secrete (milk) from the breasts or udder. 

  • To draw (milk) from the breasts or udder. 

  • To express a liquid from a creature. 

  • To express milk from (a mammal, especially a cow). 

  • To give off small gas bubbles during the final part of the charging operation. 

noun
  • A white liquid produced by the mammary glands of female mammals to nourish their young. From certain animals, especially cows, it is also called dairy milk and is a common food for humans as a beverage or used to produce various dairy products such as butter, cheese, and yogurt. 

  • A white (or whitish) liquid obtained from a vegetable source such as almonds, coconuts, oats, rice, and/or soy beans. 

  • An individual serving of milk. 

  • An individual portion of milk, such as found in a creamer, for tea and coffee. 

  • The ripe, undischarged spat of an oyster. 

  • Semen. 

How often have the words flog the log and milk occurred in a corpus of books? (source: Google Ngram Viewer )