need to know what this phrase means to be able to interpret it into sign language for a play. "There's no poop in his pizzle"
A pizzle is an animal's penis, but in this case is probably being used in reference to a human. Poop is excrement. Of course, a more accurate idiom might be there's no piss in his pizzle, or poop up his butt.
At any rate, it means he has no strength, gumption, worth, bravery or idea.
And how I get from piss in a pizzle to gumption, I've no idea. In fact, it may mean something entirely different, so you'll have to study the context more closely. If I were signing it, I think I'd sign "nothing in his head" instead.