User blog comment:WonderfulUnicorn/How the hell can he speak with a f**kin sword in his mouth/@comment-972068-20121221200927

First of all, Zoro is called "Zoro" in the FUNimation dub. Don't call people idiots if you're going to say something idiotic yourself.

Second, it's possible to have something in your mouth and speak. Sometimes it depends on the item and the person. Your voice will never sound 100% clear, which is something the FUNimation dub actually pluses on. They make Zoro's voice slightly muffled when he has a sword in his mouth, so he sounds like he has something in his mouth, unlike other dubs where his voice is clear.

Try this: Put a banana in your mouth sideways. Try talking. You can still talk, but your voice will be a bit muffled. Get stronger teeth and an actual sword hilt, and you'll see how Zoro can speak.

I don't understand why people question this so much. :/