The highest possible echelon of a clown. About 90% of the things they say or do is just some clown shit. Basically every group has at least one. A clownington can be looked at in two different ways. One such way is that someone is such a fucking meat-head that clownington would be an appropriate name. On the other hand, it could be someone who will always seize the perfect opportunity to troll another whilst not really giving two fucks about the outcome/saying stupid shit on purpose.
Chodingtons' is a degenerative disease that can attack at any age. Those suffering from the illness appear to regress mentally, losing any and all trades/skills that they may have acquired during their life. In extreme cases language is also affected, as both the victim's vocabulary and ability to enunciate diminish rapidly.
The end result is a useless chunk of flesh and skin completely devoid of positive characteristics and rational thoughts. The person has become a useless chode.
Dave: "Is it just me, or is Wendell's code completely useless?"
Rob: "Wendell's everything is completely useless... Kid's got Chodingtons' Disease"