Here’s a quick one: young earth creationism likes to claim that God created everything out of nothing, but that’s actually a self-refuting claim. Before you can create anything out of nothing, you must first have nothing, and there has never been a time when God had nothing besides Himself. “Nothing” means nothing else existed, not even time. But there has never been a time when time did not exist, obviously. Therefore there has never been a “nothing” out of which God could create anything.
That’s the short-short version. The slightly longer follow-up is to point out that time is just one inherent aspect of material reality, which is composed of the space/time continuum and the matter/energy duality. In other words, we know that at least part of the material universe has existed for all of time, uncreated. It cannot come from nothing, because there has never been a time when it did not already exist (since part of it is time itself).
Creationists like to brag that the biblical account of creation is unique, in that it’s the only creation story in which God creates everything ex nihilo. And they’re right: other myths portray God as creating in the context of a pre-existing material universe. Biblical creationism is the only story build directly on creation ex nihilo, which means it’s the only myth to make the mistake of refuting itself right out of the gate.
Good one, Moses.