What exactly does "OT" mean? The acronym stands for Off Topic. What does "OT" REALLY mean? The main purpose of this subforum is to discuss anything and everything not directly related to the MLS franchise for the City of Philadelphia and/or the supporters' group Sons of Ben. Even though other discussions MAY be soccer related, if they do not fit into the Philly or SoB sections, those threads will be located in the "OT" subforum.