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It's always sunny in Philadelphia Season 2 Episode 4 : Mac Bangs Dennis' Mom

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Summary

Barbara hooks up with Mac to make Frank jealous, which leads to retaliation from Dennis.

Episode Guide

Season 01
s011e01
The Gang Gets R...
season 01
episode 01
s011e02
Charlie Wants a...
season 01
episode 02
s011e03
Underage Drinki...
season 01
episode 03
s011e04
Charlie Has Can...
season 01
episode 04
s011e05
Gun Fever
season 01
episode 05
s011e06
The Gang Finds ...
season 01
episode 06
s011e07
Charlie Got Mol...
season 01
episode 07
Season 02
s021e01
Charlie Gets Cr...
season 02
episode 01
s021e02
The Gang Goes J...
season 02
episode 02
s021e03
Dennis and Dee ...
season 02
episode 03
s021e04
Mac Bangs Denni...
season 02
episode 04
s021e05
Hundred Dollar ...
season 02
episode 05
s021e06
The Gang Gives ...
season 02
episode 06
s021e07
The Gang Exploi...
season 02
episode 07
s021e08
The Gang Runs f...
season 02
episode 08
s021e09
Charlie Goes Am...
season 02
episode 09
s021e10
Dennis and Dee ...
season 02
episode 10
Season 03
s031e01
The Gang Finds ...
season 03
episode 01
s031e02
The Gang Gets I...
season 03
episode 02
s031e03
Dennis and Dee'...
season 03
episode 03
s031e04
The Gang Gets H...
season 03
episode 04
s031e05
The Aluminum Mo...
season 03
episode 05
s031e06
The Gang Solves...
season 03
episode 06
s031e07
The Gang Sells ...
season 03
episode 07
s031e08
Frank Sets Swee...
season 03
episode 08
s031e09
Sweet Dee's Dat...
season 03
episode 09
s031e10
Mac is a Serial...
season 03
episode 10
s031e11
Dennis Looks Li...
season 03
episode 11
s031e12
The Gang Gets W...
season 03
episode 12
s031e13
The Gang Gets W...
season 03
episode 13
s031e14
Bums: Making a ...
season 03
episode 14
s031e15
The Gang Dances...
season 03
episode 15
Season 04
s041e01
Mac and Dennis:...
season 04
episode 01
s041e02
The Gang Solves...
season 04
episode 02
s041e03
America's Next ...
season 04
episode 03
s041e04
Mac's Banging t...
season 04
episode 04
s041e05
Mac & Charlie D...
season 04
episode 05
s041e06
Mac & Charlie D...
season 04
episode 06
s041e07
Who Pooped the ...
season 04
episode 07
s041e08
Paddy's Pub: Th...
season 04
episode 08
s041e09
Dennis Reynolds...
season 04
episode 09
s041e10
Sweet Dee Has a...
season 04
episode 10
s041e11
The Gang Cracks...
season 04
episode 11
s041e12
The Gang Gets E...
season 04
episode 12
s041e13
The Nightman Co...
season 04
episode 13
Season 05
s051e01
The Gang Exploi...
season 05
episode 01
s051e02
The Gang Hits t...
season 05
episode 02
s051e03
The Great Reces...
season 05
episode 03
s051e04
The Gang Gives ...
season 05
episode 04
s051e05
The Waitress Is...
season 05
episode 05
s051e06
The World Serie...
season 05
episode 06
s051e07
The Gang Wrestl...
season 05
episode 07
s051e08
Paddy's Pub: Ho...
season 05
episode 08
s051e09
Mac and Dennis ...
season 05
episode 09
s051e10
The D.E.N.N.I.S...
season 05
episode 10
s051e11
Mac and Charlie...
season 05
episode 11
s051e12
The Gang Reigni...
season 05
episode 12
Season 06
s061e01
Mac Fights Gay ...
season 06
episode 01
s061e02
Dennis Gets Div...
season 06
episode 02
s061e03
The Gang Buys a...
season 06
episode 03
s061e04
Mac's Big Break
season 06
episode 04
s061e05
Mac and Charlie...
season 06
episode 05
s061e06
Mac's Mom Burns...
season 06
episode 06
s061e07
Who Got Dee Pre...
season 06
episode 07
s061e08
The Gang Gets a...
season 06
episode 08
s061e09
Dee Reynolds: S...
season 06
episode 09
s061e10
Charlie Kelly: ...
season 06
episode 10
s061e11
The Gang Gets S...
season 06
episode 11
s061e12
Dee Gives Birth
season 06
episode 12
s061e13
A Very Sunny Ch...
season 06
episode 13
Season 07
s071e01
Frank's Pretty ...
season 07
episode 01
s071e02
The Gang Goes t...
season 07
episode 02
s071e03
Frank Reynolds'...
season 07
episode 03
s071e04
Sweet Dee Gets ...
season 07
episode 04
s071e05
Frank's Brother
season 07
episode 05
s071e06
The Storm of th...
season 07
episode 06
s071e07
Chardee MacDenn...
season 07
episode 07
s071e08
The ANTI-Social...
season 07
episode 08
s071e09
The Gang Gets T...
season 07
episode 09
s071e10
How Mac Got Fat
season 07
episode 10
s071e11
Thunder Gun Exp...
season 07
episode 11
s071e12
The High School...
season 07
episode 12
s071e13
The High School...
season 07
episode 13
Season 08
s081e01
Pop–Pop: The Fi...
season 08
episode 01
s081e02
The Gang Recycl...
season 08
episode 02
s081e03
The Maureen Pon...
season 08
episode 03
s081e04
Charlie and Dee...
season 08
episode 04
s081e05
The Gang Gets A...
season 08
episode 05
s081e06
Charlie's Mom H...
season 08
episode 06
s081e07
Frank's Back in...
season 08
episode 07
s081e08
Charlie Rules t...
season 08
episode 08
s081e09
The Gang Dines ...
season 08
episode 09
s081e10
Reynolds vs. Re...
season 08
episode 10
Season 09
s091e01
The Gang Broke ...
season 09
episode 01
s091e02
Gun Fever Too: ...
season 09
episode 02
s091e03
The Gang Tries ...
season 09
episode 03
s091e04
Mac and Dennis ...
season 09
episode 04
s091e05
Mac Day
season 09
episode 05
s091e06
The Gang Saves ...
season 09
episode 06
s091e07
The Gang Gets Q...
season 09
episode 07
s091e08
Flowers for Cha...
season 09
episode 08
s091e09
The Gang Makes ...
season 09
episode 09
s091e10
The Gang Squash...
season 09
episode 10
Season 10
s101e01
The Gang Beats ...
season 10
episode 01
s101e02
The Gang Group ...
season 10
episode 02
s101e03
Psycho Pete Ret...
season 10
episode 03
s101e04
Charlie Work
season 10
episode 04
s101e05
The Gang Spies ...
season 10
episode 05
s101e06
The Gang Misses...
season 10
episode 06
s101e07
Mac Kills His D...
season 10
episode 07
s101e08
The Gang Goes o...
season 10
episode 08
s101e09
Frank Retires
season 10
episode 09
s101e10
Ass Kickers Uni...
season 10
episode 10
Season 11
s111e01
Chardee MacDenn...
season 11
episode 01
s111e02
Frank Falls Out...
season 11
episode 02
s111e03
The Gang Hits t...
season 11
episode 03
s111e04
Dee Made a Smut...
season 11
episode 04
s111e05
Mac & Dennis Mo...
season 11
episode 05
s111e06
Being Frank
season 11
episode 06
s111e07
McPoyle vs. Pon...
season 11
episode 07
s111e08
Charlie Catches...
season 11
episode 08
s111e09
The Gang Goes t...
season 11
episode 09
s111e10
The Gang Goes t...
season 11
episode 10
Season 12
s121e01
The Gang Turns ...
season 12
episode 01
s121e02
The Gang Goes t...
season 12
episode 02
s121e03
Old Lady House:...
season 12
episode 03
s121e04
Wolf Cola: A Pu...
season 12
episode 04
s121e05
Making Dennis R...
season 12
episode 05
s121e06
Hero or Hate Cr...
season 12
episode 06
s121e07
PTSDee
season 12
episode 07
s121e08
The Gang Tends ...
season 12
episode 08
s121e09
A Cricket's Tal...
season 12
episode 09
s121e10
Dennis' Double ...
season 12
episode 10
Season 13
s131e01
The Gang Makes ...
season 13
episode 01
s131e02
The Gang Escape...
season 13
episode 02
s131e03
The Gang Beats ...
season 13
episode 03
s131e04
Time's Up for t...
season 13
episode 04
s131e05
The Gang Gets N...
season 13
episode 05
s131e06
The Gang Solves...
season 13
episode 06
s131e07
The Gang Does a...
season 13
episode 07
s131e08
Charlie's Home ...
season 13
episode 08
s131e09
The Gang Wins t...
season 13
episode 09
s131e10
Mac Finds His P...
season 13
episode 10
Season 14
s141e01
The Gang Gets R...
season 14
episode 01
s141e02
Thunder Gun 4: ...
season 14
episode 02
s141e03
Dee Day
season 14
episode 03
s141e04
The Gang Chokes
season 14
episode 04
s141e05
The Gang Texts
season 14
episode 05
s141e06
The Janitor Alw...
season 14
episode 06
s141e07
The Gang Solves...
season 14
episode 07
s141e08
Paddy's Has a J...
season 14
episode 08
s141e09
A Woman's Right...
season 14
episode 09
s141e10
Waiting for Big...
season 14
episode 10
Season 15
s151e01
2020: A Year in...
season 15
episode 01
s151e02
The Gang Makes ...
season 15
episode 02
s151e03
The Gang Buys a...
season 15
episode 03
s151e04
The Gang Replac...
season 15
episode 04
s151e05
The Gang Goes t...
season 15
episode 05
s151e06
The Gang's Stil...
season 15
episode 06
s151e07
Dee Sinks in a ...
season 15
episode 07
s151e08
The Gang Carrie...
season 15
episode 08