It's Always Sunny in Philadelphia, Season 1 Ep. 3 - "Underage Drinking: A National Concern"
Underage Drinking: A National Concern is the third episode of the American situation comedy series It's Always Sunny In Philadelphia.
It aired on August 18th, 2005 on the FX Network in the United States. The episode was the first to be directed by Dan Attias. Its story was developed by Rob McElhenney and Charlie Day, and written by Rob McElhenney.