(noun) An unfortunate combination of male ejaculate and feces.
(verb) When a man excretes semen and feces simultaneously.
Anyone experiencing such a disturbing occurrence should consult a doctor immediately.
Guy: "Hey bitch, I got summin kinky for you."
Girl: "Oh baby, let's do it."
Guy: "I'm going to jizzle aaaaalllll over you."
Girl: "WHAT THE FUCK IS YOUR PROBLEM?!"