Cretin

[Becky]

An encourageable greenhorn. No matter how much you try, the person has no idea of what he is being instructed, nor does he care. The person is hopeless

[Sonia]

A cretin can only be described as a really [dumb], [moron], or [idiot]
although cretin sounds much more official.
The word cretin is derived from the latin kretton. Which means [brainless ghoul]

[Mark Zuckerberg]

The lowest form of humanity. A person that is a waste of air. A person who is lazy and dosent contribute anything to society.

[Donald Trump]

Severe mental retardation caused by a major deficiency in the [thyroid gland].

A rather entertaining insult used by intelligent people to describe people who wont get the meaning of the insult even after a second or third explanation.

[Sonia]

The next level below a fool.

[Britney]

person inflicted with a thyroid deficiency resulting in stunting of mental and physical growth. In other words, a mentally-challenged dwarf. Derives from the Swiss French term for a Christian. You do the math.

[Couch Potatoe]

Everybody!

[Mark Zuckerberg]

A word derived from [the French] slang term crétin (/kʀ[et]ɛ̃/) roughly translated as idiot although in reality is often used in a more offensive way. It may also mean geek in the context of [the French language] but is not used in this way in English.

[Michiko]

A stupid person (used as a general term of abuse).

[Dave Paprocki]

A disgusting human, in every way [physically] possible. Often a person who attempts to make jokes at other people to [hide] his true inside feelings of [rejection].