Dumb Slogan

Domino's latest slogan is "You got 30 minutes." This is immediately followed by the disclaimer that due to safety concerns, 30 minutes is not a guarantee and you may, in fact, got more. Why would you want a slogan you immediately had to follow with a caveat? Why not go back to the ad agency and say "Why don't we have our slogan be something that is...semi-true?" Today, while in a Domino's, I heard the girl taking an order on the phone say "You got 30 minutes...to an hour." I'm really hoping that it's not a corporate policy to always say "You got" x amount of time...but in any case, that just proved the point of what a dumb slogan it is. I'd love to know how much money they spent on it.