"four bucks is dumb" Outdoor Advert for Mcdonald's

McDonald's new ad campaign is taking a non-too-subtle jab at Starbucks.
Residents in Seattle, Washington, the birthplace of Starbucks, can now see approximately 140 McDonald's billboards emblazoned with "large is the new grande" or "four bucks is dumb."
In a statement released Thursday, McDonald's called it "a light-hearted, fun approach to our brand," aimed at promoting the company's McCafe coffee products. However, Starbucks is not finding the ad campaign funny.