Possible Clues:

• Reaction to a baby panda, perhaps
• Exclamation before 'How cute!'
• icanhascheezburger.com reaction
• Response to videos of puppies descending stairs, e.g.
• Cute kitty reaction
• 'Isn't she adorable!'
• "Isn't that precious!"
• "Totes adorbs!"
• "Cuteness overload" reaction
• 'What a cute kitten!'