Definition of cream-crackered in English:

cream-crackered

adjective

British
informal
  • Extremely tired.

    • ‘Because I'd had a couple of drinks after the show, and also because I was ' cream crackered ', I had a driver.’
    • ‘Oh, and a lot of recent peacy stuff, which I may have to ease up on; I'm just cream-crackered, frankly.’
    • ‘I am cream crackered so I'm off to my foton.’
    • ‘I was out all day yesterday, and I'm pretty cream-crackered, so I may watch a film and go to bed.’

Origin

1980s: rhyming slang for ‘knackered’.