I am alright with religious memed but it always annoys me to see this, not only because it is often used as an argument against atheists but it is also logically retarded.
Religion: The belief in and worship of a superhuman controlling power, especially a personal God or gods.
Atheism: Disbelief or lack of belief in the existence of god or gods.
Atheism is specifically the lack of belief in a higher power or god and therefore does not meet the definition of a religion. Now you're smarter. You're welcome.