Does anyone else feel like their writing self is completely different from their speaking selves?

Does anyone else feel like their writing self is completely different from their speaking selves? Whenever I'm trying in vain to have a conversation with someone, they're probably thinking who's this retard who keeps stuttering like an idiot. But, when I'm writing, I can just communicate like a normal human and truly express what I want to say. Like Jekyll and Hyde, they're two opposite personalities.