Possible Clues:

• Does that matter?
• Pig that loses its head - does it matter?
• Pig required with pork-pie, perhaps - is that surprising?
• It's unimportant, who cares
• 'As if I care'
• Who cares if hoax regularly splits couples up?
• Broadcast particular role — why is that significant?
• Has two nuts. Does it matter?
• 'I'm not impressed'
• "You think I care?"