"Teen-Trannies" is a term used in adult content to describe a type of pornographic video involving young transgender individuals, typically those who are still physically developing. This tag targets viewers interested in scenes featuring teenage transsexuals or transgender performers. The term "trannies" is a slang term for transgender people, and combining it with "teen" provides context about the age group involved in these videos.
This tag is meant for adult audiences who have an interest in this specific niche of pornography. It helps to filter content according to viewers' preferences, making it easier to find the desired type of material within a vast collection of adult films and images.