This just in from facebook.
It was on the facebook wall of a chap called Troy Boyle. Though it seems to be by some cartoonist called Bill who squiggles his surname…
Hat-tip to Polyp.
UPDATE 18/2/2011: See comments below. “I read the cartoon as a comment on *organised* religion”the hierarchy that guards the dogma”, not on every religious person (some of my best friends are Christians/Jews/Muslims [well, there's one person I'm close enough to to call a friend]. If I had read it as a “let’s make fun of the believers and accuse them of being close-minded” then a) it wouldn’t have been funny and b) I wouldn’t have posted it.”