dimbus

plural dimbuses

1. slangA foolish or stupid person.

   We had a clock counting down to the satellite time, which was booked and locked. We couldn't change it. We had to make the time, and this guy was a dimbus. But eventually we got it working.

   2002, Michael Crichton, Prey, page 29

   1 more example

   >Have you heard that Sierra has a 77gr. .224 that'll feed through an magazine? Thats^([sic]) .223 you dimbus, now I really believe you won't shoot yourself in the foot first. BTW SS109 is better anyway.

   2000, Gone-A-Viking, “Gore's G.O.T.V. for Blacks”, in talk.politics.guns (Usenet)