Until 1975, the standard PSA (Personal Space Allowance) had always been fixed at a comfortable, civilised 20 inch zone around each citizen. The government suddenly amended this, however, citing terrorism and a rising population as reasons to cut personal space along with other social benefits and civil liberties.
The PSA was more than merely reduced: The new bodily zone into which representatives of the state (and even some commercial organisations) were now free to pass was amended to minus 5.2 inches. Naturally, this made human bodies 'semi-permeable', legally speaking, and for many people only the depths of their intestines remained private.
Police, security and social services enthusiastically exploited the new laws, as did the health service which randomly pilfered internal organs from unsuspecting citizens, claiming quite lawfully that they were found in 'communal public places'. The nervous public caught on and by 1977 there were self-help groups springing up all over Scarfolk which helped citizens become as obese as possible in an effort to protect their innermost parts from state interference and even commercial exploitation.