Fathead

[Mark Zuckerberg]

A cyprinoid fish of the Mississippi valley (Pimephales
promelas); -- called also black-headed minnow.

[Rihanna]

A stupid person.

[Justin Bieber]

Someone who thinks very highly of themselves, usually [pertaining] to a [selfish] [attitude] as well.

[Gregory]

someone who has an [overly] large [head] for their [body]

[Sommer]

A [whack job] jackass with an ego the size of [Wyoming] and an IQ that a refrigerator would laugh at.
Lets look at our Head of [the Executive] Branch, shall we?

[Merna]

An annoying moany [nob] with a [massive] [cranium]

[Dianne]

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.

[Michiko]

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.

[Agnes]

[A dumbass] that thinks [circumcision] means [circular] decision.

[Julian]

Used to [describe] someone that is [annoying] or does [something] annoying.