Related Clues:

• Mona Lisa trademark
• It might be boyish
• Expression for the Joker
• Wide smile
• One may be wry
• Sign of pleasure
• Cheshire Cat’s look
• It may be impish
• Smile ear-to-ear
• One may be sly
• : ) in an e-mail
• Canine show?
• Sign of sheepishness
• ''Let a ___ be Your Umbrella''
• 'Say cheese!'