“Milkshake” is a pop/R&B song written and produced by The Neptunes for American singer Kelis’s third studio album Tasty (2003). In 2006, CKE Restaurants used an edited version of the song during commercials for Hardee’s and Carl’s Jr. milkshakes. One version, called “Cow Shake Off”, features two men shaking two cows as though dancing to the music.
Carl’s Jr. is an American fast-food restaurant chain, located mostly on the Western half of the United States in Pacific, Mountain and West Coast regions. It is also in the process of expanding into Canada and Mexico. It was founded in 1941 by Carl N. Karcher, and is owned by CKE Restaurants, Inc.
A milkshake is a sweet, cold beverage which is made from milk, ice cream or iced milk, and sweet flavourings such as fruit syrup or chocolate sauce in Canada, most regions of the United States, Australia, and the United Kingdom.