"femboyfever" is a porn video tag that refers to content involving femboys. A femboy is a term used to describe individuals, typically male-identifying people, who express femininity in their appearance or behavior. In the context of porn, this tag implies that the video features scenes or performers with a focus on femboy characters, often presenting them in sexual situations. This may include elements such as cross-dressing, makeup, and other forms of feminine expression. The "fever" part of the tag suggests an increased interest or excitement for this specific type of content.