Green’s Dictionary of Slang

1. dirty.

1999

(con. 1920s) G. O’Neill My East End (2000) 88: There was this one bloke, he talked a bit posh, but he was dooky [dirty] and he shuffled about in these old clothes.

2. (US campus) unpleasant, distasteful, disgusting.

1982		G. Tate ‘Beyond the Zone of the Zero Funkativity’ in Flyboy in the Buttermilk (1992) 41: Computer Games is Clinton’s response to the dealiest dookey shtick of our times: information overload.
1997–2000		Da Bomb 🌐 9: Dookie: Polite way of saying shitty, horrible, bad.