A slang term for the weekly manga magazines which are quite common in Japan and nerd specialty stores. These weekly manga are considerably huge and used use thin paper similar to that found in phonebooks, hence the name "Phonebook Manga".
You'd have a lot more space in this room if you threw away some of those phonebook mangas.
A saying used with "Jo Jo's Bizarre Adevnture" whenever somebody asks a stupid fucking question about the show or "When will Hamon return?" they get a response such as "Read the manga"
:Hey guys does Joseph Joestar die in part 4?"
"Read the manga you filthy weeabo trash"
Some fuckin gay site that that i read manga on surprisingly it has a safer comment section than pornhub ngl and lowers my confidence because my peen is only 7 inches these mother fuckers out here wit dicks bigger than my whole arm Jesus Christ
random dude 1: shit how did i get addicted to this shit? reading my manga is the only site i go on at night help me lord