la duhh
a loud and rude way to tell someone they’re so dumb it’s like they were raised by a donkey who only said 'moo'
'La duhh? You thought the sky was purple and you’re still trying to convince me?'
'La duhh? You think eating soup with a fork is a smart idea? You’re a monster.'
'La duhh? You’re telling me you still believe the moon is made of cheese? You’re a fool!'