Also, judging by the other definitions posted on here, they are people that come under a lot of flak from believers.
Its the atheist's choice really.
PS: To the Christians, we tend to comment on you the most because you tend to attack the most. I have yet to run into a Buddhist monk ranting about how I'm going to suffer for all eternity for not being Buddhist.
Someone more tolerant of others: Oh, I see. You're religious. I'm atheist.
opposite of theist.
atheist: dumbshit. *rolls eyes and strolls away*
2)high school student that believes the lack off faith in a deity grants them the right to behave like a complete asshole that gets easily offended if someone of authority says something like "God help us."
man: God bless you
atheist: I'm an atheist, i don't believe in God
man: Then, gesundheit
2) Teacher: Only God himself can help this class's grades
atheist: Don't say God, some people might not believe in God
Teacher: If you want people to respect your beliefs you have to respect theirs, and I believe in God so please do not insult my faith and I won't insult yours... or lack there of.