America's favourite gun-toting octogenarian, Clint Eastwood, has grabbed the headlines after holding a conversation with an empty chair during an address to the Republican National Convention.
Eastwood ad-libbed a speech with an imaginary Barack Obama, asking him: "So Mr President, how do you handle the promises you've made?"
The Huffington Post UK was instantly reminded of America's other famous pensioner, the legendary Grandpa Abe Simpson.
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But can you tell which is which? We have 15 quotes from the two gents… but who said what?