And not just metaphorically.
The Conservative leader unveiled a new gesture he said he had dreamed up especially for the Labour shadow chancellor.
Mr Cameron spent much of the early part of this year being tormented by Mr Balls. The Labour MP consistently taunted him about the state of the economy, then showing no signs of improvement.
Mr Balls even invented his own signal, the flatline, which consisted of a hand pointing straight across. He was often seen making the gesture in the Commons during Prime Minister's Questions.
In some political circles it became almost as ubiquitous as Mo Farah's Mobot.
Now there are signs the economy is improving, however, not for Mr Cameron the quite satisfaction of a job well done.
Instead, he said he had invented a gesture of his own for Mr Balls, to such nervous laughter among Conservative members that they again proved their party is very well named.
And so the 'up' was born. Mr Cameron jabbed his right finger into the air as he shouted about all the things that he said were "up", such as jobs , since his party came to power.
This risque moment aside, the speech was almost a study in seriousness.
Gone was the confident no notes, striding across the stage performances of recent years. Instead, the Tory leader stayed rigidly stuck in place, reading his speech from an autocue. Behind him, the British flag was laid at such an angle it appeared to look like a rather dark crossroads. As a metaphor it worked well.
Coming on stage after an introduction from young people involved in some of the Tories' key policies, including a 12-year-old who attends a flagship "free school", Mr Cameron's message was that only he could finish the job on the economy and also offer a vision - of a "land of opportunity".
Cynics suggested it sounded awfully like last year's vision of an "aspiration nation".
But Mr Cameron was convinced.
Perhaps the Prime Minister went too far, however, in trying to convince us it was only his party that could deliver when he said "the land of hope is ...Tory".