Charlie often exhibits difficulty reading and writing, and is often accused of being illiterate or dyslexic by other characters. Mac even went as far as claiming "No one understands the subtleties of Charlie's retardation better than me." (The Gang Gets Held Hostage)
Charlie was unable to read his job on the paper after blowing up building (The Gang Goes Jihad), so he got Mac to read it for him. "Interstate" and "sanitation." (The Gang Gives Back)
Charlie wrote an incoherent script for Dennis' TV commercial: "Hello fellow American. This you should vote me. I leave power. Good. Thank you, thank you. If you vote me, I'm hot. What? Taxes, they'll be lower... son. The Democratic vote is the right thing to do Philadelphia, so do.". (The Gang Runs for Office)
Charlie can not read a note left by Frank: Charlie: "Okay meet... it starts out meet... um" Dennis: (takes note) "Meet me in the parking garage. Frank. you clearly have a learning disability dude.". (The Gang Runs for Office)
Charlie kidnapped a baby from Mac and Dee, and left this note: "Taked Baby. Meet at later bar. Night or day sometime." (The Gang Finds a Dumpster Baby)
Charlie wrote a note in the vents that Frank read: "If here by now then bad place be. Trouble time for you when heat comes." (The Gang Gets Held Hostage)
Charlie misread a contract that resulted in his putting the bar at risk of being lost in a contest, misreading the word PRIZE as PRIDE. (The Gang Dances Their Asses Off)
Charlie wrote a sign to help sell the Gang's gasoline. His sign gave prices for "UNLED'D" (with the N backwards), "PREMEM" and "DEASEL". (The Gang Solves the Gas Crisis)
Some fans have suggested that Charlie's freakout over Pepe Silvia (Sweet Dee Has a Heart Attack) might be due to him not being able to read the word Pennsylvania. Though others point out that Mac says "Not only do all of these people exist, but they have been asking for their mail on a daily basis". Though Charlie mistaking the address for a name might be a possibility if the letters were all for different people.
Charlie was unable to write clear lyrics to his musical, and needed help from Artemis. (The Nightman Cometh)
Charlie was unable to read a carnival sign in front of the Waitress that said, "SpeedPitch: HOW FAST CAN YOU THROW?" (The D.E.N.N.I.S. System)
In a somewhat surprising moment of literacy, Charlie manages to write a perfectly formed "H" on a box he has put a hornet's nest, even though he is writing on the side of the box facing away from him, forcing him to write backwards and upside down in relation to him. (It's also a bit striking that he knows that the word "hornet" begins with an "H") In that same episode, however, his difficulty with language raises its head again, as he cannot understand the word "philanthropist" and ends up telling his date that he is a "full-on rapist." (The Waitress is Getting Married)
The question that Charlie wrote for Chardee MacDennis reads as follows: "Dennis is asshole. Why Charlie hate?" (the answer being, of course, "Because Dennis is a bastard man.") Charlie denies that he wrote it, but Mac says it has to be him, because "How many illiterates are there here?" (Chardee MacDennis: The Game of Games)
Dennis: I'll read the words you wrote. "Hello fellow American. This you should vote me. I leave power. Good. Thank you, thank you. If you vote me, I'm hot. What? Taxes, they'll be lower... son. The Democratic vote is the right thing to do Philadelphia, so do." This doesn't make any sense!
Charlie: Alright... then just say whatever you want.
Added by Kanamekun
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