On my break at work I found myself in the thick of the action at a Paralympics Expo in Trafalgar square. Boris is there, grinning and doing his trademark "er-er-er". That slightly famous black guy in a wheelchair is there.
Then a big silver car turns up and bang, it's David Cameron, right there in front of me. The only way to describe him in the flesh is like a man with a latex David Cameron mask on, or a very realistic inflatable David Cameron.
Then I bought a smoked salmon sandwich from EAT which had an unusually large amount of filling in it. It was an all-time classic in terms of lunch breaks.