Macichon
You call someone a macichon when they’re so clueless it’s like they’ve never heard of the word 'common sense'
You: 'You just said the ocean is purple. You’re a macichon.'
In a text: 'You’re a macichon. You don’t even know what a sentence is.'
In a DM: 'You’re a macichon. You think you’re cool, but you’re not.'