formally: someone who lacks a belief in any god
informally: anyone who isn't a gotbotting moron
Lance Armstrong is an atheist.
To be right about everything and having every reason to fuck with Christians
Not all atheists believe this, but I'm smarter than most of them, too.
People who don't understand why we are here.
Or stupid people
Man 1 : does God love atheists ?
Man 2 : yes, HE MADE THEM!
A racist,anti-Christian hate group just like Satanists.
Satanists.
Atleast according to the Church of Satan.
The Church of Satan claim to be atheists.
An evolutionary biologist from England who answers to the name of Richard Dawkins.
dude1: I'm an atheist.
dude2: Oh, you must be Richard Dawkins.
Someone who rejects the use of God to explain nature due to its irrelevance.
Atheist: Why does God let children die of starvation everyday?
Believer: The Lord works in mysterious ways.
Atheist: That's just an excuse for not knowing what the hell you're talking about.