Context: The first flag is from endoxenosysstuff, coined around April 2023. “Transfather is when you identify as/want to transition/have transitioned to being a father/someones father, this can be someone specific like identifying as your partners father or it can be in general.”
The second flag is from kow-laking, coined around January 2023. Transfather is, “A transfamily identity for person who identifies as or wants to be a father despite not being one(or not being one by societal standards).”