The “Got Milk?” slogan was code for Adrenochrome. “Milk” is a slang word for it. Look at old ads of Hollyweirds sporting the “milk moustache”. They were proud of that club they just joined. Those “Missing Kids” on milk cartons years ago was another code to everyone, bragging. This was pre-social media, and am guessing there were hidden codes on the milk cartons, too.