Fundy Atheists

It is impossible to be a fundy atheist, as there is no belief system to follow.  Atheists don't even agree on what sort of existence God doesn't have.  God may be an imaginary thing in the mind of theists, may not exist at all, or be a vague focus of belief.  In any event for an atheist whatever God is it is useless. 

On any behavioral scale atheists can be found anywhere as they are human, but generally they fall closer to the normal regions as they don't have vuvuzelas in fancy dresses in over decorated balconies ranting at them constantly that they are worthless sinners.  Deconverted theists, especially deconverted Christians, may retain some of this negative self image, a childhood of self-loathing is not easily forgotten, but even the deconverts have managed to lose most of the adverse behavioral effects.

Unlike theists, especially Christians, atheists don't need someone to tell us how to behave, we generally take the day we are given and "rejoice and be glad in it" per Forrest Church, and make it great without help.