Though it was all smiles at PMQs yesterday when Dave mocked the Speaker’s address to the Queen, the PM’s “kaleidoscope budget” gag clearly hit a nerve and Bercow was left unable to speak for a good ten seconds. Now Guido hears it wasn’t just a well timed line, but in fact the terms of a bet…

Dessie Swayne, Dave’s PPS, and a few other Tory backbenchers who come in very early every morning have come to be known as The Breakfast Club. It’s mostly ex-lawyers and bankers who are used to an early start. When Cameron broke bread with them on Wednesday morning they bet him a bottle of wine that he couldn’t get the word “kaleidoscope” into a PMQs response. It’s not clear whether the wine will be drunk over breakfast…

UPDATE: Tweeter @ToryOutcast gets in touch to say he had mentioned this last night and the exact terms were a bottle of Krug with Stephen Phillips MP. Cheers…

UPDATE II: Having gone back to the original sources for this story, it seems Dave has been changing his tune. He told the 1922 Committee it was a bottle of wine that he had won in the bet rather than champagne. Looks like the Tory ban on the sparkling stuff is still in place…