Green’s Dictionary of Slang

dick adj.

[dick n.1 (10)]

1. (US) mean or offensive.

[US]F. Kellerman Stalker (2001) 566: That was before Crayton and his cunt wife and all those dick people infected my life.

2. stupid.

[UK]J. Joso Soothing Music for Stray Cats 42: No one knows what shite passes through your head, so long as you’re not dick enough [...] to splat it in an email.
[US]Rayman & Blau Riker’s 239: They would label one of the tables the ‘Dick’ table. That was the step up from [sitting on] the floor. However, you’re still not on the real table.