Aspects of the present disclosure involve a system comprising a computer-readable storage medium storing a program and method for replacing text in a message thread. The program and method provide for receiving an indication of user input provided by a first user, the user input comprising a text-based term for updating a message thread between the first user and a second user; determining that the text-based term is included within a set of predefined terms, each predefined term within the set of predefined terms having corresponding replacement content for including in the message thread, the replacement content having been specified by the first or second user with respect to messages exchanged between the first and second user; and providing, in response to the determining and based on the set of predefined terms, the replacement content corresponding to the text-based term within the message thread.