If you want people to understand that you spurn mainstream religion but nevertheless consider yourself part of a community with a common philosophy, go with Pastafarian. If you want people to wonder WTF you said, go with agnostic atheist. Only about one in a thousand will understand it, and most of the rest will focus on atheist and try to push you into the river.
"Mit der Dummheit kämpfen Götter selbst vergebens."
("Against stupidity, the gods themselves contend in vain.")
-- Friedrich Schiller (1759–1805)
Reality is that which, when you stop believing in it, doesn't go away.
-- Philip K Dick
OK, now let's look at four dimensions on the blackboard.
-- Dr. Joy
English isn't much of a language for swearing. When I studied Ancient Greek I was delighted to discover a single word - Rhaphanidosthai - which translates roughly as "Be thou thrust up the fundament with a radish for adultery."