who are the ad wizards that came up with this one?

So I'm just sitting here, watching the tv when I see a crystal light commercial that I've seen a few times before. I guess I've never paid much attention to it before because I failed to notice that this one woman says that drinking Crystal Light makes her want to buy pretty underwear.

Really? Not only does this sound stupid, it also sounds completely false. So why even say it? Is there anyone who would watch this and actually agree? Couldn't she just say that she likes to drink it because she thinks it tastes good?