Possible Clues:

• Quirky phrase
• Love trapped by one obscure colloquialism
• Hit the sack, e.g.
• I love to wear dumb expression
• Translating challenge
• I would go to British isle for regional speech
• Going to the dogs, e.g
• Group of words in which the meaning may not be obvious
• 'I had ten thousand, in a manner of speaking (5)'
• Linguistic quirk