ma-ta rider
A guy who treats your mom like a donkey and rides her like it's a competition. He's not just riding her, he's humiliating her in Romanian.
Your mom rider said, 'Your mom is my donkey and I’m the best rider.'
He DM’d you, 'Your mom is my donkey and I ride her every day.'
He yelled at your mom, 'You’re my donkey and I’m your rider!'