cute. (to answer the sober question we all thought you were going to ask: atheists believe there are no gods. that's all. we may or may not have anything else in common. some people ask, can atheists eat meat, can atheists listen to christian music, do atheists this, can atheists that. it's silly. atheism isn't a religion or a sect and has no rulebook or tenets. all it has is a definition. if you fit the definition you're an atheist!)
It is very easy to google the definition of what it means. One simple thing..... we do not believe in a god or gods exist... Most of the indigenous religions around the world also didn't believe in gods but did believe in spirits in nature. The one god idea is only around 3,000 yrs old.
"Atheism is, in the broadest sense, the absence of belief in the existence of deities. Less broadly, atheism is the rejection of belief that any deities exist. In an even narrower sense, atheism is specifically the position that there are no deities." For example to me this wiki definition means in the broadest sense agnostics are atheists but in the less broadly and narrower sense agnostics are not atheists. I take issue with this kind of usage of the word and so only use it in the narrower sense and use nontheist in the broader sense.