So you are "certain" of the "confidence" of his non existence?
I'm sorry but until you remove the "probably" from your statement the atheist society cannot accept your membership application.
And as much as we want, we can not share our secret hand shake/fist bump with you nor invite you to our monthly gatherings wherein we mock believers and act all carnally.
Rules!
Woops! Sorry guys i've just noticed how that title doesn't even make sense.