[Very fast for humans isn't very fast for a Saiyan- and Lee's first kick meets with the back of Vegeta's arm as he blocks it. In that however, he notes that Lee is a lot stronger than he looks. The second kick comes, and he side steps it, giving it a glance before setting his eyes back on Lee.]

You know, if you're going to try to hit me you might want to try to move a little faster than that. Allow me to demonstrate.

[And that being said, he disappears- appearing again right next to Lee with a side kick coming straight at his midsection.]