HabberKnackle
A person who's so ugly and loud that they make everyone else feel bad. They also think they're the most important person in the room.
HabberKnackle showed up to the party and yelled about their hair for an hour.
My teacher is a HabberKnackle. She even failed my best friend for no reason.
That guy is a HabberKnackle. He tried to start a fight with the principal.