This porn video tag indicates that the content involves a transgender man, also known as a transmasculine individual, engaging in sexual activity. In this context, the term "trans-man" refers to an individual who was assigned female at birth but identifies and expresses themselves as male. The act of being "fucked" implies that this person is taking part in penetrative sex, most likely receiving anal or oral intercourse from a partner. This tag can be useful for viewers who are specifically interested in trans-masculine porn content.