The "thick-futanari" tag refers to a specific subgenre within the realm of futanari, which is a Japanese term for individuals with both male and female anatomical features. In this context, "thick" is used to emphasize that the characters possess notably larger or more prominent genitals compared to other futanari representations. This tag is primarily for adult audiences who are fans of futanari content and appreciate such visually distinct, exaggerated physical traits.