Green’s Dictionary of Slang

Douglas Hurd n.

[rhy. sl.; ult. Douglas, Lord Hurd, British Conservative M.P. (b.1930)]

1. a piece of excrement [= turd n.].

[UK]R. Puxley Fresh Rabbit.
[UK]B. Dark Dirty Cockney Rhy. Sl. 47: I don’t go to the park any more because of all the dogs leaving their Douglas Hurds all over the paths.

2. a third class degree.

[UK]R. Puxley Fresh Rabbit.
[UK]B. Dark Dirty Cockney Rhy. Sl. 47: He spent three years in the pub. It’s no wonder he got a Douglas.