In Glee's "Blame It On The Alcohol" episode last night, all of the characters learn about the bad effects of drinking too much... it's called a hangover! And in the clip above, Brittany winds up projectile vomiting on Rachel during a performance of Ke$ha's "Tik Tok."

Props to the hit show - watched by teens and parents alike - for dealing with the issue of underage drinking. Funny, but with a point!