Where a man goes when a woman he is dating never hears from him again. The bizarre yet common occurence when a man drops out of the woman he is dating's life without explanation.
Maggie asked Scarlett, "How's Ed?" Scarlett replied, "Girl, I think he's gone Milk Carton Man. He hasn't called. No text. No email. I haven't seen him. Nothing." Maggie commented, "Yeah,well, we'll be seeing him on the back of the milk carton for sure."