"Trap-masturbation" refers to a pornographic video that features characters who are depicted as being trapped in a particular situation, often involving some form of bondage or confinement. In this scenario, the characters are typically unable to escape their predicament and must find alternative ways to pleasure themselves, leading to self-stimulation or masturbation. This category of porn is geared towards those who enjoy watching individuals overcome sexual frustrations while being restrained or limited in their movements. The term "trap" here does not necessarily imply any specific gender identity or orientation but rather serves as a descriptor for the captive and confined nature of the scene.