Jackpost
A human who talks too much and thinks they're the smartest person in the room.
My friend's dad is a jackpost. He told the whole restaurant about his 'big day' at work. No one asked.
My mom is a jackpost. She called me 3 times in one day just to say 'I love you, but I’m also tired.'
My dog is a jackpost. He barked at the mailman for 10 minutes because he thought he was a robber.