In Season 9, Episode 7 of It's Always Sunny in Philadelphia , titled "," the group voluntarily locks themselves inside Paddy’s Pub to avoid a severe flu outbreak sweeping Philadelphia. Their primary motivation is to preserve their singing voices for an upcoming competition to open for Boyz II Men . Plot Overview
: After Dennis breaches the quarantine by ordering a pizza, Frank exiles him to the bar’s bathroom. [S9E7] The Gang Gets Quarantined
: Frank becomes increasingly neurotic, shaving all his body hair and slathering himself in hand sanitizer to stay "pure". In Season 9, Episode 7 of It's Always
: The Gang realizes they aren't actually sick with the flu; they are experiencing severe alcohol withdrawal because they stopped drinking for the quarantine. Upon drinking hidden booze, their "sickness" immediately vanishes. : Frank becomes increasingly neurotic, shaving all his
: After surviving their self-imposed lockdown, they discover the Boyz II Men concert was canceled anyway because the band itself caught the flu. Critical Reception
: Most of the Gang eventually show severe symptoms—shaking, vomiting, and extreme lethargy—and are one by one exiled to join Dennis in the bathroom. Key Themes & Revelations The episode is famous for two major comedic twists: