Frostburg State University police officer Derrick Pirolozzi conducts a "knock and talk" at a house near campus, reminding students of laws on underage drinking and open containers. Jennifer Ludden/NPR hide caption

itoggle caption Jennifer Ludden/NPR

Singer Ke$ha performs during the iHeartRadio Music Festival at the MGM Grand Garden Arena in Las Vegas in September. Ethan Miller/Getty Images hide caption

itoggle caption Ethan Miller/Getty Images

Eighty percent of college students drink, and schools have had little success reducing those numbers, or the problems caused by excessive alcohol. Toby Talbot/AP hide caption

itoggle caption Toby Talbot/AP

Looks good. But maybe this time I'll stop at one. Kjersti Magnussen /Flickr hide caption

itoggle caption Kjersti Magnussen /Flickr

Beer pong and other drinking games are popular among teenagers, and play a role in binge drinking. iStockphoto.com hide caption

itoggle caption iStockphoto.com

Man, you are going to get wasted. The words drinkers choose to describe their behavior may say a lot about the risks they face. iStockphoto.com hide caption

itoggle caption iStockphoto.com

A bartender pours a beer at the Nomad Pub in Milwaukee, Wisc., in 2006. Darren Hauck/Getty Images hide caption

itoggle caption Darren Hauck/Getty Images