Matured Zucchini

I let the Zucchini mature itself,  and i wonder if this is really a zucchini or some random hybrid cross cucurbit that grow in my backyard.

Anyways, it grows more than 17 inches, more than the length of my laptop. But then,
it tasted good, so it may not be zucchini but some random cucurbits that grow because I toss them in there.