I like this line in the latest disco damaged mailing:

Mini-cab fares drop by £5 for every 50 metres you walk away from the club.

A good theory, and one borne out by my evidence: the last time I went to the Fridge, the touts directly outside the venue quoted a fare of £25 for a ride home. I walked 100 metres down the road to the bus stop, where a very sweet elderly cab driver charged me a mere £12 for the trip from Brixton to West Hampstead. And proceeded to tell me, in graphic detail, about the system of calisthenics for the elderly that he had devised. TMI, mate, TMFI.