No church definition of lust

Who says the Church has no sense of humour? This, from General Synod Written Questions and Answers

The Revd Barney de Berry (Canterbury) to ask the Chair of the House of Bishops:

• Q104 Does the church have a settled and agreed theological definition of lust, where is that stated, and what is it?
  
• The Bishop of Lichfield to reply on behalf of the Chair of the House of Bishops:
  A There is no official definition of lust agreed formally by the Church of England.