Boards
I think I've found a plot hole in The Wire...
Okay, in season 3, when Stringer wants Clay Davies killed, as he heads into Avon's "office", he says, "Slim Charles? Who the fuck is Slim Charles?" (to illustrate how out-of-the-loop with Avon he's become).
BUT
In the first episode of the same season, when the Barksdales are having their "board meeting", String says: "Chair recognises Slim Charles," i.e, already on first/nickname terms.
I bet this has already being pointed out, hasn't it? Or I bet I'm misremembering it.