Possible Clues:

• Texter's "No way!"
• Texter's "Holy moly!"
• Texter's "I'm shocked!"
• Online gasp
• Shocked letters
• Texter's 'No way!'
• "Srsly!?"
• 'Holy cow!,' in a text
• Texter's 'Holy moly!'
• Texter's exclamation