1. A whack job jackass with an ego the size of Wyoming and an IQ that a refrigerator would laugh at.
2. Let's look at our Head of the Executive Branch, shall we?
A person with an unusually large dome, who is anoying as Hell and loved by very few. The size of his dome is so terrible, and his I.Q is so small, many belive him to be a different species of mamal.
Somebody who has an overly large blob, which they call a head, protruding from their neck. Or someone who thinks their at the top of the bottle looking down on everyone else.