Possible Clues:

• Modern expression of shock
• Shocked shorthand
• 'Yikes!,' to a texter
• 'That's amazing!' to a texter
• "Egad!" in an IM
• Bit of shocked text
• Online 'Yikes!'
• Chat room 'Yikes!'
• Letters of surprise, in text messages
• 'Yipe!,' online