Binge drinking
In the United States, the most common definition of binge drinking was created by the National Institute of Alcohol Abuse and Alcoholism in 2009.  It says that binge drinking is a pattern of drinking alcohol that brings a person's blood alcohol content (BAC) to 0.08 or more.  Blood alcohol content is the percentage of ethanol in the person's blood.  (In the United States, a BAC of 0.08 means a person is legally drunk.)  This means that a person would be binge drinking if: