CTOC
An acronym for Check The Other Chat(s). As simple as that. Often used in online chat applications where there are multiple rooms, to get the person to go to the chat homepage and read messages from other chats.
John: Hey aren't Maxwell's Equations beautiful?
Von Neumann: Bruh
Von Neumann: Ctoc
John: Oh ok
Von Neumann: Bruh
Von Neumann: Ctoc
John: Oh ok