Related Clues:

• "No need to remind me"
• "How was I so foolish?!"
• "I'm such a dope!"
• 'Right?!'
• 'No need to remind me'
• A good idea's occurred to me — say yes? No!
• 'Right!'
• 'You already told me!'
• 'You already told me'
• "Ha! What was I thinking?!"
• One nerd turns up: here's the answer
• "Already heard about that"
• Possible response to 41-Down