Possible Clues:

• Emote too much giving account in public
• With no attempt at concealment, devouring a cold ham
• Play part exaggeratedly
• A courgette at first wrapped in plain ham
• Mug, e.g
• Public scoffs a starter of cheese and ham
• Perform hammily
• Exaggerate role in very particular period during month
• Ham is finished and cat is upset
• 'Saw the air too much with your hand,' in Shakespeare's words