Kelly: "See, there's this thing called a g-spot..."
Zach: "Sorry, I only believe in evidence-based sex."
Also, Zach might want to read some studies in regards to things deemed "alternative medicine." Not all conventional medicine is evidence-based and not all evidence-based medicine is conventional.
That's not to say that going with a random "alternative medicine" treatment won't get you complete BS most of the time, but that's why it's important to read the studies in regards to efficacy and safety of conventional medicine treatments vs. efficacy and safety of "alternative medicine" treatments.
Edit: By the way, I am aware that the clitoris is not the g-spot. I would think that would be obvious from the first part of my post, but I know that some people will misread it.