This is one of the silliest memes spouted by the Village Atheist Left. It's banter like this that makes me believe they are the Jehovah's Witnesses of godlessness, as if there were some kind of 90 day training school that all budding Atheists attend, to learn the basics as well as the bumper sticker slogans that they regurgitate all over the internet.
Babies aren't born atheists, they're born ignorant. They know next to nothing. At best, a baby is AGNOSTIC (as an agnosis, "lacking knowledge or understanding"). Atheism is a conscious decision, a rejection of belief.
However, if Village Atheists want to call themselves ignorant babies, I won't stand in their way.
Atheists, get some new material, puleeeeze.....