Related Clues:

• Emphatic assent
• ''Well, that's completely obvious!''
• 'Of course, blockhead!'
• "You don't say!"
• Forehead-slapper's cry
• "Absolutely!"
• "Of course!"
• 'Boy, am I dumb!'
• "How could I be so stupid?"
• "How obvious!"
• 'Isn't that obvious?'
• 'Isn't that obvious?'
• 'Well, that's obvious!'
• Bonehead's response
• 'Well, ___!'