dummkopf

We stay here—ja—because this Dummkopf has the controls gebrochen!

Didn't you feel their stun guns, Dummkopf, when they sprung the trap—too soon, Gott sei Dank?

She hesitated and he yelled out, "Dummkopf" and then turned to me and smiled.

The waiter did not know what it was and the irascible Teuton informed him bluntly that he was a Dummkopf.