a fucking knobhead
Someone so dumb, they believe the sky is a ceiling and still can't tell 'their' from 'they're'. They're like a donkey with a broken brain.
My brother said, 'They're going to their house, and I'm going to there's house.'
My dad said, 'I'm going to there's house, and they're going to their house.'
I asked, 'Where is your book?' He said, 'It's in their bag.'