I’d wear that.
I don’t understand what you mean by this. It was an observation, not an insult, using the wording of the person I was quoting. What are you objecting to? 
I like it!
I’m with you Q.E.D. I wonder if possibly someone is lashing out at you for this whole thread.
Atheists never sin.
A coleague has this on his cubicle wall…
There is no God higher than Truth
Mahatma Gandhi.
“Men rarely (if ever) manage to dream up a God superior to themselves.”
-Heinlein
A traditional one I saw at least 35 years ago is:
MAN WITHOUT GOD IS LIKE A FISH WITHOUT A BICYCLE
I think I had some responce to this thread yesterday, but I don’t remember anymore.
Dan Dennett proposed a latin acronym for the Darwin fish (starting at 2:00 in this video), which translates to:
Destory the author of things in order to understand the infinite universe.
Also, we have a good agnostic bumper sticker slogan.
“Jesus hates you”
“I don’t need a god to tell me murder is wrong.”
Jesus told me he doesn’t love you anymore.
Hey, that one’s mine!
I liked the Militant Atheist one too. 
Just one miracle
and hurry up
He tried with the pretzel, but He’s a little rusty at this miracle stuff. 
(Sorry to drag politics into this, but it was the first thing that popped into my head and it was just too funny not to share.)
In case anyone is interested, Darwin 3:16 reads: “The elder De Candolle and Lyell have largely and philosophically shown that all organic beings are exposed to severe competition.”
It’s not particularly catchy. Admittedly, I didn’t go so far as to render On The Origin of Species into verses; that’s just the 16th sentence of Chapter 3. Perhaps breaking the sentences up would result in a snappier 16th verse. Darwin did love his run-on sentences.
I don’t believe that atheism really needs a slogan. But in the event that I’m wrong, may I suggest: “The buck stops here.”
I love my fucking deity, because my deity loves fucking me.
I think that might be the one I was looking for… but I’m not sure.
That’s the best suggestion yet. It might undo some of the damage of the evangelical atheists.
I dunno. I suspect that people who think most atheists are assholes are unlikely to be swayed by logic or reason.