Related Clues:

• "So that's it!"
• 'Ahh . . .'
• Forehead slapper's exclamation
• 'Ah'
• Dawning words
• "I'm not stupid, y'know"
• Crystal gazer's phrase
• Bit of shrink rap?
• "C'mon, too easy!"
• "Aha"
• "Got it"
• 'It's clear now'
• ''Understood''
• "Gotcha!"
• Sarcastic retort