Examples of dunderhead

• Am I such a dunderhead that I haven't made that plain? 

• Do you mean to say you were such a pack of dunderheads you didn't see it coming? 

• It is particularly unpleasant to hear a bullet come singing and booming down the line from some excited dunderhead on the far left or right. 

• The lazy dunderhead, I'll soon fix him! 

• You're the stupidest dunderhead I ever saw or ever heard of, so help me Moses!