Related Clues:

• Use one's zygomatic muscles
• Sly look
• Exude elation
• Jack-o-lantern feature
• Facial gesture
• Do this and bear it
• Alfred E. Neuman feature
• Cheshire cat feature
• Amused look
• Small beam
• Hilarity
• It may be found between the ears
• Puckish expression
• Smirky smile
• Smile from ear to ear