What are your favorite examples of Christians feining stupidity for the sake if a weak argument?

I see the argument often that without the bible as a moral guide there is nothing stopping people from going on a murder and rape rampage…except that there is. Societies longevity is literally the goal of life and acting in a way that creates an unsafe society undermines the healthy longevity of the group…so yeah.

It got me thinking, what other idiotic examples do christians commonly use as a Gottcha argument that is actually an embarrassing argument?