“As the saying goes, "When someone says they don't believe in God,
it doesn't mean they believe in nothing, it means they will believe in anything”
That’s not what it means.
And you say this is a “saying”? Where is this saying said and by who? Did you just make this up? It doesn’t matter. I don’t believe in sayings either. What does that mean?
If you want to talk about something that means something other than what is said, go to church. As the preacher reads from the bible, he will follow it everything up with ‘Now what that means is...’, as he puts his own thoughts into it. (edited)