When you have a mild stroke whilst developing other conditions such as down syndrome, autism, schizophrenia, etc, whilst preferring to communicate in weird animal noises instead of actual words.
A big fat goofy looking dufis who lumbers around like he has 2 loads of crap in his pants. This individual will have poor oratory skills, will be dumb as a stump and will dress like a he got his clothes at the Salvation Army.