Warning: the following joke is not suitable for people who cannot laugh at anything religious.
Taoism: Shit happens
Hare krishna: Shit happens Rama Rama Ding Ding
Hinduism: This shit has happened before
Islam: That shit happens is the will of Allah
Zen: What is the sound of shit happening?
Existentialism: Shit doesn't happen; shit is
Buddhism: When shit happens, is it really shit?
Confucianism: Confucius say, "Shit happens"
7th day Adventist: Shit happens on Saturdays
Protestantism: Shit won't happen if I work harder
Protestantism: If shit happens, it happens to someone else
Catholicism: If shit happens, you deserved it
Jehovah's Witnesses: Knock, knock, "Shit happens"
Jehovah's Witnesses: No shit happens until Armaggedon
Unitarian: What is this shit?
Mormon: Shit happens again & again & again
Judaism: Oy vey! Why does this shit always happen to us?
Pentacostalism: Praise the shit!
Atheism: There is no shit!
New Age: Shit happens and it happens to smell good
Rastafarianism: Let's smoke this shit