[ridiculous muscles are nothing, Zoro's are showing since he never bothers to button his shirt. He scowls at the taunt, not because it actually hurts (it doesn't) but because a combination of taunting and flying out of his range speak of someone weaker than him, who can't handle his swordsmanship.]

If it'll make you feel better I'll blindfold the other eye so I can't see you at all, how about that?

[equal confidence bordering on arrogance. But that does bring up an idea, so for a moment Zoro turns his haki on his opponent, feeling out just how strong he could be.

The sensation slaps him hard enough to make his good eye widen in shock. Holy shit...what power...! For a moment he can't even move, but then he shakes himself alert and drops a hand to swiftly pull the third sword at his side, putting it between his teeth. He brushes off the unsettling feeling and grins around the hilt]

I can see this is going to be worth my time.

[let's see just how fast this guy is...Zoro springs from his place in a blink, not even bothering with low-level testing swings. Straight into an Oni Giri, crossing two swords over the third and diving through the path so that the impact of the three blades would - should - hit Vegeta dead center if he doesn't dodge.]