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1. The deepest part of the rectum, beyond Zones 1 and 2.

2. A circle of drab towns on the periphery of London, notably Watford, Croydon and Slough; also Wembley, Stevenage, Harlow, Basildon, Thamesmead, Crawley, Slough and Hemel Hemstead.

Zone 2 takes in places like Harlesden, Romford, Woolwich, Lewisham and Brixton.

Zone 1 consists of gentrified, boho and hipster areas such as Hampstead, Highgate, Dalston, Hoxton, Islington, Greenwich, Fitzrovia, Soho, Kensington, Notting Hill, Richmond, Chiswick, Kingston upon Thames, and Ealing.

Belgravia and Mayfair are off the map.
Definition 1: "I lubed up the dildo and bang: straight into Deep Shit Nine.

Definition 2: "How about we give Dalson a miss and take an Uber to Deep Shit Nine?
by Jack Jazz 1 June 09, 2018
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