fackter
A person who talks too much but still messes up your life. A f***ing annoyance wrapped in a title.
My friend is a fackter. He yells about video games all day but can't beat me in one.
My dad is a fackter. He says he's the best at chess, but he always loses.
My neighbor is a fackter. She says she's the best baker, but her cookies are burnt.