Possible Clues:

• Wisely provide the stuffing and the last of the holly
• Wisely come out with posh lass staying in
• Like wise guy to be devious about his years
• Shrewdly canny about how old one is
• Time put into underhand in a sensible way
• Speak about broken leg with experience and insight
• Go down and see, as befits one who is wise
• In a Yoda-like manner
• Wise way to think
• In a Solomonic manner