"TS" in this context stands for "Transsexual" or "Transgender." It refers to a person who has undergone, is undergoing, or has a strong desire to undergo gender transition and whose gender identity does not match their assigned sex at birth. In the world of adult entertainment, TS often refers specifically to trans women (male-to-female).
"BBW" stands for "Big Beautiful Woman." This term is typically used to describe a plus-size or voluptuous woman who is confident and proud of her body size and shape. In the context of adult entertainment, BBW often refers to a particular niche of content featuring larger, curvier women in intimate scenes.
So, the combination "TS-BBW" in a porn video tag means that the video features a trans woman who is considered big, beautiful, and voluptuous. It likely involves explicit scenes involving this particular individual or type.