The term "trans-beity" in the context of a porn video tag refers to content featuring transgender individuals, specifically those who are female-to-male (FTM) transsexuals. This often includes scenes with FTM performers engaging in sexual activities with cisgender or other transgender partners. The focus here is on showcasing and appreciating the beauty and uniqueness of transgender bodies and identities, as well as providing a platform for their pleasure and desires to be represented and celebrated.