What's it like?

As the sensations build I feel a tightening in my lower back. That's how I know I'm getting close. The tightening grows into a tingling, and suddenly the feeling explodes through my body, paralyzing me. The noise I make is more eternal than sexual. After wards, I feel more relaxed than I thought possible. I sink into the sheets, like I  might fall right through, and I feel capable of anything.