This tag refers to a specific category within the adult content industry. "Shemales" is a term used to describe transgender women with male genitalia, or individuals who identify as gender nonconforming or queer. The act of "pissing" in this context refers to the act of urination, which can be incorporated into sexual activities and fantasies.
In summary, this tag is for content involving shemales engaged in acts of urination, often as part of their sexual performance or exhibitionism. It's essential to note that this fetish is based on adult consenting individuals engaging in specific activities and should not be confused with non-consensual or disrespectful behavior.