It's Always Sunny in Philadelphia Season 5 Episode 10 - The D.E.N.N.I.S. System

Airdate: 2009-Nov-19

Episode summary:

Dennis tells the gang how he seduces women, but none of them can get the hang of it.

About It's Always Sunny in Philadelphia series:

An American television sitcom that stars Glenn Howerton, Rob McElhenney, Charlie Day, Kaitlin Olson, and Danny DeVito. The series follows the lives...Show more >