Rogue ghetto mathamaticians with their distinctive territorial ‘tagging’
are a common sight in today’s London
Look Around You was a series of educational programs in the UK. They explain the world in simple every day language and idioms; and are part of the reason that the Brits lead the world today in such fields as diverse as Sock-Puppet Porn, and Counting to 37 Backwards in Binary.
Aptly enough, this is the episode about Maths.