It's Always Sunny in Philadelphia Season 4 Episode 9
Dennis Reynolds: An Erotic Life
After discovering Dennis' erotic memoir, Mac and Frank attempt to make some money off of it. Meanwhile, Dee and Charlie decide to spend a day in each other's shoes.
4 - 13The Nightman ComethNov. 20, 2008- 4 - 12The Gang Gets Extreme: Home Makeover EditionNov. 13, 2008
- 4 - 11The Gang Cracks the Liberty BellNov. 06, 2008
- 4 - 10Sweet Dee Has a Heart AttackOct. 30, 2008
- 4 - 9Dennis Reynolds: An Erotic LifeOct. 23, 2008
- 4 - 8Paddy’s Pub: The Worst Bar in PhiladelphiaOct. 16, 2008
- 4 - 7Who Pooped the Bed?Oct. 09, 2008
- 4 - 6Mac and Charlie Die: Part TwoOct. 02, 2008
- 4 - 5Mac and Charlie Die: Part OneOct. 02, 2008
- 4 - 4Mac’s Banging the WaitressSep. 25, 2008
- 4 - 3America’s Next Top Paddy’s Billboard Model ContestSep. 25, 2008
- 4 - 2The Gang Solves the Gas CrisisSep. 18, 2008
- 4 - 1Mac and Dennis: ManhuntersSep. 18, 2008
