I think the kind of atheist being brought up in this meme is the stereotypical religion-hating Reddit neckbeard, who, although he doesn't have any restraining values against sexuality, is far too repulsive to ever engage in it.

Jumping straight on the bait here, but who is more likely to have seen pussy:

- The hedonistic and corrupted atheist with no restraining values

- Or the good religious boy who is supposed not to have any impure thought before marriage?