Found this on the net. I think it could have been done better. But it's funny. Maybe the bright minds of our fair forums could come up with some better examples?

Taoism - Shit happens
Hare Krishna - Shit happens rama rama ding dong
Islam - If shit happens, take a hostage.
Zen - What is the sound of shit happening?
Buddhism - When shit happens, is it really shit?
Confucianism - Confucius say, "Shit happens".
7th Day Adventists - Shit happens on Saturdays.
Protestantism - Shit won't happen if I work harder.
Catholicism - If shit happens, I deserve it.
Jehovah's Witness - Knock, knock. "Shit Happens."
Unitarian - What is this shit?
Mormon - Shit happens again & again & again...
Judaism - Why does this shit always happen to me?
Rastafarianism - Let's smoke this shit.

Haha, this one's my favorite:

Jehovah's Witness - Knock, knock. "Shit Happens." :D

My fav: Rasta- Let's Smoke this shit. :m:

Scientology: Bring the shit to the movies too

Confucianism - Confucius say, "Shit happens". One of the Funniest.