I know I am but what are you?
A sneaky way to make someone think they're the smart one, only to laugh at them later.
'I know I am but what are you?' I asked. He said he was 'a genius' and then forgot how to tie his shoes.
'I know I am but what are you?' I said. She said she was 'a scholar' and then asked me to explain algebra.
'I know I am but what are you?' I asked. He said he was 'a wizard' and then spilled his coffee.
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