A person who, unlike religious people, don't have imaginary friends (like Jesus).
A: Hey, look at that religious person, he makes-believe every day!
B: I know, that's kinda weird A: Obviously the world wasn't created in 7 days. And if there was a God why are so many African children dying?
B: Yeah, atheists are so smart.
Someone who isn't stupid enough, or gullible enough, to believe in magic, or silly creation myths, especially those of certain ancient, backwater desert tribes.
"At my bible study we were studyingGenesis and how God created the Earth and the heavens in 7 days."
"Thats just fucking stupid, i'm an atheist, now get the fuck of my porch."
A person who does not believe that a "god" or supreme being exists. And, although often forgotten, this does include not beliving Satan, also. So, no, we're not Gothic; we just don't have a preference. Some Atheist people may sound arrogant to you, but it is just that they are having trouble understanding why you belive in god, and you are having trouble understanding they don't. They usually don't make a big deal of it, unless you offend them just because you belive otherwise. This is not to be confused with being agnostic, which is a person who is not sure whether a supreme being exists or not.
---anonymous(coming from someone who is Atheist--not some person who is offended by them w/ their dumbdefinition...)
In the United States this is typically someone who started out as a pushy judgmental Christian, surrounded themselves with other pushy judgmental Christians, then realized that God is not compatible with being pushy and judgmental and threw the God part out of their life instead of the pushy judgmental part.
You Christians are all pushy and judgmental, I would know because I used to be one. ... When are you going to realize the Bible is a myth, you moron?
A person who's goal in life is to destroy other's beliefs in gods. In the end, this proves futile and leaves the would be "atheist" in a state of confusion. This is NOT the true nature of an authentic atheist.
In general, atheists tend to be much less combative then those who believe in a god. When provoked, they will fight back, but never really be able to prove thier point. This is very similiar to a theist.