pagolchoda
A person who was smart at birth but turned into a brain-dead meat sack. People call them a "stupid piece of trash".
My cousin is a pagolchoda. He used to know math, now he can’t add 2 + 2.
That guy in my class is a pagolchoda. He failed the test and still thinks he’s a genius.
My neighbor’s dog is smarter than my brother. He’s a pagolchoda.