if you're rubbing your pussy right now, then your house must be only you, and the grass is green, sky is blue. so we can get your speed of rubbing is at the speed of light, and if you're rubbing in a speed of light, then you'll get into a time travel, probably create some time paradox, and if you went back right when you are rubbing your pussy, you'll see the second you, and if you create some sound outside, your uncle will though that's he's wife, and hide under your bed, and if you make your uncle goes underneath your bed, a random woman won't get pregnant, and your little sister won't be born, and if your sister doesn't born, then she can't discover you're about to cum, and you cum very hard, but your rubbing speed is at the speed of light, and will create a black hole beside solar system
and guess what? boom, you get sucked into black hole and died.