An ejaculatory bomb reaching speeds of at least Mach-2 and usually involving no less than 6 ounces of fluid. A true "rocket" travels at thrice (or more) the distance of ones normal load and has been known to target the eyeball, inner ear and ceiling. The rocket can be measured by torso length and/or mouthfull.
An extremely powerful, yet elusive version of male ejaculation. This often occurs every so often during sex where the ejaculation shoots a much further distance than normal. The amount of semen shot is also greatly increased as well.
I pulled my dick out of her mouth right before I was going to cum, I stood up as she layed down on the bed and I launched a jizz rocket. Man, she was drenched in cum, along with the bed and walls!