Inspired by an incident from a riot in Bristol on the 21st March 2021.

A Dirty Bristol is a sexual act in which the male dresses up as a policeman, preferably in riot gear. The female then crouches and defacates on, or next to, his feet.
This girl from Kingswood took me back to hers and did a Dirty Bristol on me, absolutely filthy!
by BristolPostHhh March 22, 2021
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Simply another term for a reach around.

The term was coined after a large group of homosexual bristolians were caught on video performing the act at a party close to bristols city centre.

Not to be confused with Dirty Bristow, as similar as it is.
Harry was caught giving his dad the old dirty bristol.
by D.ten. January 6, 2010
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