When teens are talking to their friends, they use TMB in informal conversations when they are sure of receiving a prompt response or when they are having a follow-up discussion. It is frequently used in such messages as I will tell you later, TMB. The wording aids the social interaction and connection in the texting culture that is ever-changing. However, it is not offensive and parents must realize that overindulgence in texting shortcuts such as TMB could be indicative of an addiction to regular electronic communication and stress the importance of balance between online and offline communication. Know more about what does tmb mean
Source: Saferloop
Source: Saferloop