The birth of a retarded child due to a male drinking to much Mountain Dew causing decreased sperm health.
Urban Legend says that if a male drinks to much Mountain Dew it can cause decreased sperm health and overall amount.
Guy1: Hey did you hear about Chris's newborn
Guy2: Yeah I did, it so sad that it’s a Mountain Dew baby.
Guy1: Right, I told him to lay off the Soda.