The term "trans-and-cis" in the context of porn video tags refers to a category that includes both transgender and cisgender individuals.
Transgender individuals are those whose gender identity does not match the sex they were assigned at birth. This may include people who have transitioned or are in the process of transitioning, as well as those who do not identify with any specific gender but are transgender.
Cisgender individuals, on the other hand, are those whose gender identity aligns with the sex they were assigned at birth. These individuals might identify as male, female, nonbinary, or another gender entirely, but their gender identity is in line with their assigned sex.
In the context of porn video tags, "trans-and-cis" typically implies scenes featuring sexual interactions between transgender and cisgender individuals, often focusing on the differences and similarities between these two groups.