The redneck strike again.

[Angrboda]

a figure of speech in which apparently contradictory terms appear in conjunction (e.g., faith unfaithful kept him falsely true ). [/i]

If you don't understand the meaning of the term CONTRADICTORY then you wouldn't know the meaning of the word OXYMORON.
What is contradictory in anyone thinking that God does not exist?
An atheist think that God does not exist but at the same time he-she proceed toward God so God exist despite the believe that he does not exist.
This is highly CONTRADICTORY mister therefore i can say that atheism is an oxymoron.

Still not an oxymoron.

You just can't accept being wrong about anything, can you? That's sad.