"foot fetish ts" in this context means a porn video that features elements related to a foot fetish. This could include various activities and scenarios involving feet being licked, rubbed, or worshipped, as well as other forms of foot-related fetishistic behavior. The "ts" at the end refers to the fact that it is specifically targeted towards a TS (transsexual) audience, meaning that the content may also involve transgender individuals in the foot fetish activities.