Possible Clues:

• Milk pudding knocked over - finished!
• Finished with Des and you, in short
• Exhausted American given education at university
• Spent penny once, going to London, following custom
• Finished going to London, after being taken advantage of
• Completely finished
• Exhausted when given high-level employment
• 'Des, you shortly may be exhausted (4,2)'
• Tapped out
• Having exhausted energy in America, something sweet on the way north