Romney - "why don't horse come with ladders?"

At a recent party US Republican Presidential candidate Mitt Romney apparently asked "Why don't horse come with ladders?" prompting a large internet response.  The full transcript is apparently as follows:

"So I was out for a quick chukka and at the end of play all my staff rushed out to kneel down so my team and I could all dismount. As I wondered how I could fire them all I thought 'horses should have ladders!'. Why don't horses come with ladders?"

Aides to Mr Romney were quick to point out that this was a joke and that Mr Romney did indeed understand why horses didn't come with ladders. "It's because Adam and Eve were much taller than we are today, so God didn't have to add them to horses to help them mount"