Charlie Kelly can finally read this sentence. Probably. In Wednesday night’s Abbott Elementary and It’s Always Sunny in Philadelphia crossover episode, Charlie Day‘s lovable idiot from the long-running FX comedy had some help in getting hooked on phonics,

Patrick Schumacker and Justin Halpern also tell TheWrap about an NSFW moment that was cut for ABC The post ‘Abbott Elementary,’ ‘It’s Always Sunny’ Crossover: Showrunners Unpack Charlie’s Illiteracy,

The star of the FX series also admits he was initially hesitant about the crossover concept as 'It's Always Sunny in Philadelphia' heads into its 17th season.