The newly retired NBA star Shaquille O'Neal is the latest celebrity to don a milk mustache. In a feat of great timing, the Milk Processor Education Program (MilkPEP) last week unveiled the new ad to illustrate that Oreo cookies and milk are the perfect team.

The four-time NBA champion credits his mom, who is also featured in the ad, for giving him milk and Oreos as a kid. Visit whymilk.com to see behind-the-scenes footage of the ad shoot and listen to O'Neal give an account of his first dunk, which was not on the basketball court but in a glass of ice cold milk.