Mitt Romney dispatched his five adult sons onto a late night television show where they jokingly told stories of their father's pranks in an effort to humanise the former businessman who critics accuse of being boring.
Mitt Romney's sons have described their father's taste for aggressive horseplay, explaining how he enjoyed pushing their heads into plates of butter and wrestling them as children.
The rare joint appearance by all five sons took place on Conan O'Brien's talk show.
The Romney sons also revealed that they had tried to persuade their father not to make a second run for the White House, knowing it would bring their young families under fresh scrutiny.
Matt Romney said: "I was really reluctant. I didn't want him to do it. I tried to convince him not to. I think there were a few of us who tried that. I just felt like, for us as a family, this isn't the best thing. But, as Josh said, for the country we think it's the right thing."