(n.) = dimwit ; blockhead ; nonce ; birdbrain ; dumbass. Ex: The diplomats have been calling him a lucky dimwit ever since. Ex: They'd all call him blockhead, the ribbing was endless. Ex: Justin, whilst clearly a nonce, is to be commended on instigating a high-profile campaign to free the hostages. Ex: I am thinking humans can be such birdbrains when it comes to communication. Ex: I could barely recognize the lumbering ape from behind his apron, but sure enough he was one of the dumbass jocks I went to high school with.