"Tranny-Jerk" is a combination of two terms in the context of adult content: "tranny" and "jerk". In this case, it refers to a porn video involving a transgender individual who engages in masturbation or self-pleasuring. The term "tranny" is short for "transsexual," which indicates someone who has undergone hormone therapy and/or surgery to transition from one gender to another. In the context of adult content, this term often refers to individuals with male-to-female (MTF) transitioning experiences.
The term "jerk" in this context typically implies masturbation or self-stimulation, which is a common activity depicted in adult videos featuring solo performance or self-pleasuring scenes. The video tag "tranny-jerk" would therefore describe a pornographic scene involving a transgender person engaging in masturbatory activities or self-pleasuring.
Please be advised that this description contains explicit content intended for an adult audience with experience in the adult industry.