John Thomas

Definition

Slang

  • noun the penis. A hearty and/or affectionate personification in use since the mid-19th century. It was used by D. H. Lawrence in Lady Chatterley’s Lover, written in 1928 and first published in an unabridged edition in Britain in 1959. The phrase now seems to be used particularly by women.
http://www.dictionarycentral.com/definition/john-thomas.html