The term "3D Shemales (Shemale)" refers to a specific type of adult content that features transgender women or individuals with male characteristics who have female secondary sexual characteristics. In this context, the term "shemale" is often used in the adult industry as an umbrella term for transgender females and is not intended to be derogatory or demeaning.
"3D" is an abbreviation that may refer to several things depending on the context it's used in:
1. Three-dimensional - This might indicate that the content features 3D rendered graphics, giving a more lifelike and immersive experience for the viewer.
2. It could also mean that there are three performers involved in the scene (two females and one male).
However, without further context or information, it is difficult to determine the exact meaning of "3D" in this tag. But overall, the term suggests a porn video that features shemales/transgender women in various sexual activities or scenarios.