Possible Clues:

• Too old for task - gone too far
• Spit at, being too old or decrepit
• Father's bird is too old
• But Father hasn't got one! Maybe he's too old for it
• Large portion of spaghetti served with vermouth, no longer fresh
• Beyond the age of effectiveness, too old
• Mine having a way in too old to be of use
• Small singer goes after Dad's too old
• No longer competent
• Daddy's little bird is too old