THE RULES OF LUNCHTIME JAILBREAK (generally made up on the spot): You have 1 hour to get as far away from work as possible (and back), using London's execrable Tube system. You have to use more than one line and you have to leave the station you get to and buy something.
2pm on a warm, sunny afternoon. I sprint to High Street Kensington station. My target: Neasden. Why Neasden, I hear you ask. well, I've never been there before, the word "Neasden" has a faintly humourous air to it and it's far enough away to lend an element of excitement to the challenge. It's also home to Dave Spart, Private Eye's Citizen Smith-esque, ranting socialist. And last but not least, my mum worked as a midwife there in the early 1950s. In fact, she told me that during the pea souper of 1952, she had to be led by the hand by a policeman to go out on calls.
How proud she would be of my lunchtime adventure.
So, to HSK tube. After much agonising, my route is: Circle Line to Baker Street, Jubilee Line to Neasden. Not too bad a wait for a Circle Line train. But I turns out I have made a schoolboy error.
I have forgotten about the Edgware Road Totally Fucking Pointless Wait Act (1979). This law states that any time you get a train towards Edgware Road, the Driver must sit outside the station for a period not shorter than 2 minutes. Any attempt to inform passengers of the reason for said wait may result in a fine. So I'm standing there, tantalisingly close to Edgware Road, pacing up and down, looking at my watch. We're off again. We get to Edgware Road.
I've forgotten about the other Edgware Road scenario. Whatever train you are on, you will have to change platforms because another one will be going towards your destination before the one you are on moves. I once changed platforms here SIX times, all the while trying to explain to a young, timid Japanese couple that I did know what I was doing and that they should follow me if they want to get to Victoria.
They didn't, and probably didn't. 
Eventually, I arrive at Baker Street. I've lost about 8 minutes. So I sprint to the Jubilee Line. Whilst barrelling down the escalator I toy with the idea of pretending I am being chased by the police/a mercenary/MI6 by looking back over my shoulders anxiously, but discard this notion. I am 32 in a few days time and shouldn't really be contemplating such nonsense.
I get to the Jubilee line, with its funny sounding trains with their blue and yellow interiors. Bad news - the next train is only going as far as Willesden Green. I note that the woman's voice used for the automated announcement thingy for the Jubilee Line is MUCH louder and MUCH posher than on the other lines. The thing is, she emphasises "WILLESDEN GREEN!" as if it is the finest, lushest, most pleasant piece of the earth imagineable... "I'm gonna git myself a ticket and go to WILLESDEN GREEN pappy! I've heard a man can git his own piece o' land and really make sum'n of hiself there". Neasden, yes (I may be building it up in my head here), but Willesden Green? Do me a Quaver.
I have choices. I could wait 4 minutes for the following train, which goes all the way to Stanmore (oh joy!), or get the next one, change at Finchley Road on to the Metropolitan line, get off at Wembley and take the southbound Jubilee Line back to Neasden. I decide on this option. Time is running out...I have around 12 minutes to get to the big N.
Finchley Road. An agonising decision. I know I probably can't make it to Neasden in time. On the opposite platform is a Met train. I could run across the platform and try the "Met to Wembley then Jubilee back to Neasden" option. I jump off the train. Then I jump back on. Then I jump off, but the Met train's doors are closing. And so are the doors on the Jubilee train. I jump back on the train JUST IN TIME. The other people in the carriage stare at me. Obviously, as soon as I return their looks, they all look at the floor/Metro/into the future.
I decide that Neasden is an impossible dream today and elect to get off at West Hampstead after 29 minutes as it's probably the furthest I can get to. It's not a bad effort (4.5 miles according to the AA), but Neasden (5.1 miles) it ain't.
I spend approximately 5 minutes in West Hampstead. I will always love it because I will always treasure the memory of witnessing a builder carrying big bags of plaster into a house whilst wearing what is possibly the worst toupee I have ever seen. It makes him look like Patrick Troughton:
.
I return to the Tube platform to begin the return journey. Nothing of note happens and I don't pretend I am being chased at Baker Street. It occurs to me as I am strolling back to work, that I could just pretend I made it to Neasden and write up a tale of daring adventure that would make Ranulph Fiennes look like Barry from Wife Swap. Who would ever know?
But I decide that in order to maintain the integrity of the weblog, I should tell the truth. It's an emotional moment.
Just at that point, a gang of armed men with stockings over their heads run out of the Halifax building society, punching a charity collector square in the coupon on the way. I manage to rugby tackle one of them, pulling the little bit of hair at the nape of his neck really hard as he falls, in order to gain complete control of him. The rest of the gang seem to kind of dematerialise into another dimension. These things happen in Kensington occasionally. I make a citizen's arrest on the thief I have on the ground and receive a £10 book token from the bank for my troubles - ample reward as I merely see myself as a citizen doing his job.
I dust myself down and return to work. Funny old day.
Footnote: A Google Images search for "Neasden" yields the following result: 