It's Always Sunny in Philadelphia

Name: The D.E.N.N.I.S. System
Released: 2009-11-19T00:00:00.000Z
Duration: 21 min 22 s

S5, EP10 "The D.E.N.N.I.S. System"

Dennis reveals his fool-proof system for seducing any woman to the rest of the gang, but they don't grasp the concept.

Original Air Date: Nov 19, 2009FXX22m

Watch It's Always Sunny in Philadelphia with Fubo