daduncle
A man who is your brother and your kid’s dad. He’s like your dad’s second cousin, but with more yelling.
He showed up at my kid’s school play and yelled, 'That wasn’t a play, that was a performance of chaos!' My kid walked offstage and cried.
He told my kid, 'You’re gonna be a failure, just like me.' My kid said, 'You’re not my dad, you’re my daduncle.'
He tried to help my kid with homework and ended up making it worse. My kid now thinks math is a curse from the daduncle realm.