The mystery of Karl's voice

So there's this new commercial for Febreze that has been on TV lately. As one would expect, it's pretty bad: Mom comes into son's room, tells him it stinks, then "cleans" everything by spraying it with Febreze. Anyway, there's a lot to make fun of in this ad (for example, the fact that Karl, the son, is reallllllly into soccer balls), but the one thing that gets me it is that Karl apparently has been completely overdubbed.

Here's the ad:

Now, tell me if I'm wrong on this, but Karl is the only one overdubbed, right? It isn't like that super cheapo Cheerios commercial that was obviously originally from the UK that was dubbed and shoved on US television a year or so ago, is it?

(For those who have a life and don't know what I'm referring to, here's the Cheerios ad:)

This just makes me wonder about our smelly teenager. What happened to his voice? Did he have some horrible accent? Did puberty hit? Was the director pinned down to the edit booth by a crazed male who insisted on having his voice say such clever lines as "Are you kidding?" and "Woah!"

Or maybe our friend Karl lost his voice from all the screams of joy that surged through his body when he found out that he, not the other stoner-looking teenaged actors, was going to have to opportunity to use his talents to sell an odor masking agent to the masses.

Yeah, that's probably it. I know I'd be like that.