Oh yes. “I don’t know” is definitely one of mine.
• I don't recall saying "good luck"
• Money can be exchanged for goods and services!
• Works on contingency? No, money down!
• Lousy Smarch weather
• Am I so out of touch? No, it is the children who are wrong
Honourable mention:
• [OK Mr Burns, what's your first name?] I don't knowww