31/08/2012 10:40 BST | Updated 08/11/2012 19:40 GMT

Republican National Convention: Who Said It - Clint Eastwood Or Grandpa Simpson? (Quiz)

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.

But can you tell which is which? We have 15 quotes from the two gents… but who said what?