The Sonic Bash is two large threads on each respective board (depending on which continuity its content pertains to) dedicated to the archival of conversations held by members of the board using the America Online Instant Messenger program. The archived conversations can originate from both private conversations between two members of the community, or from one of the daily chats that the members of the community gather together on AIM to have. A good majority of the community's known in-jokes have logs of their origins archived in the Sonic Bash.
Due to the fact members seem to have an inability to behave in these rooms, causing many of these conversations to be rating-breaking, the Sonic Bash has been banished to Corneria.