No I'm not. Even if you are right, GT is about as screwy as
C-3P0. But, I'm not convinced. I know people that can do that. I know quite a bit of people that can do that, in fact. For fun, we took old Vegeta waves, and put them together (the file was deleted due to a virus, but I remember what it said), and my friends believed that he actually said it. "Kakarot, you are as annoying as my woman, and twice as ugly.".... they believed it. It was even more hysterical when they put scenes to it. The only way my friends figured out it was fake was because in one scene, Vegeta had his armor, and he didn't in the next (but they were supposed to go side-by-side, like scenes).
And, I agree with the "AMerican" dude above me. Maybe the manga's include it, but the tv show doesn't, for some reason.