This porn video tag, "pussy-clamped-open," refers to a scene or act where a woman's vagina is clamped open for sexual pleasure. This can be achieved through the use of a device called a clamp, which is often made of metal or silicone and has two ends that gently pinch and hold apart the labia minora (the inner lips of the vulva). Clamps can come in various shapes and sizes to suit different levels of comfort and pleasure. The act of using a pussy clamp typically enhances sensations during masturbation, oral sex, or penetrative sex, as it exposes the sensitive inner parts of the vagina and increases blood flow. It's an act often enjoyed by those who enjoy intense sensation and visual stimulation in their sexual experiences.