Possible Clues:

• Small smile
• Broad smile seen in skating rink
• King into booze gives smile
• Smile broadly, having right to dip into drink
• Cheshire Cat’s expression
• The Joker's facial expression
• “And every time I see you ____ / I’m such a happy individual” (You Make Me Feel So Young lyrics)
• '''Shorting'' the Pound? That will bring a smile to one's face!
• Facial expression
• Taking a drink round river brings a smile