This sounds like semantical pish-posh. Assuming you believe it will land, there are only two choices: heads or tails. Unless, of course, you consider the ridiculous statistical improbability of it landing on its side.
But with God and his existence, there really are only two choices: exists or doesn't exist. As far as I see as it is, there are no other choices. Saying you lack a belief that he exists implies that you must hold the only other available belief, which is that he doesn't. If you can provide me with what an alleged atheist is supposed to believe besides exists or does not exist, that would be wonderful.
There IS another choice: Nothing. You can choose not to call the side of the coin, or simply not to believe god exists or that he does. Because you don't believe the claim that god exists, you are by definition an atheist. This position is commonly, and incorrectly, referred to as "agnostic". I'll address the meaning of the word "agnostic" in my response to Dragon.
Or you can be agnostic, the only reasonable choice, and say "Well gosh, I guess it could land on either side."
You misunderstand the meaning of agnostic. I don't blame you, the word has been misused by a lot of people for a long time.
"Agnostic" means "Without knowledge". If one is agnostic in regard to the existence of god, this means that they don't know if god exists. It does not mean that they refuse to believe one side or the other. Belief and knowledge are different things. Theism and agnosticism are not mutually exclusive, and neither are agnosticism and atheism. One can be an agnostic theist, or one who believes that God exists, but does not actually know. If one knows that god exists, they are "Gnostic". I earnestly believe that it is impossible to be a gnostic theist. Likewise, a gnostic atheist is one who does not believe in the existence of God, and doesn't know if God exists. There is no such thing as a gnostic atheist, because it is impossible to know that god does not exist.
"Atheist" means "Without the belief in a god". It has been misused commonly to refer to "the belief that god does not exist", and even to mean "Devil Worshiper" and "Communist".
Since most languages are ill-equipped to deal with the idea of neutrality, many people have taken to use the term "Weak atheist" in reference to someone in the neutral, "no-call" position, and "Strong atheist" in reference to one who believes that god does not exist. I don't like these terms, because it sounds more like they are referring to the strength of one's certainty rather than separate and distinct positions. However, this is the best set of terms that anyone's come up with, so I use them when it is required.
Then what's up with all the "look, there can't be a god, because science says this and logic says that" shit? Atheism has partially gone way past the absence of religion.
I have not said "there can't be a god". The existence of god is a possibility. However, because I feel it is unlikely, I take the stance of being a strong atheist, even though I don't like the term used to describe the position.