I had not seen that one but the series is famous.
if you do a google search for "farting preacher" in quotes you get 232,000 hits.
http://www.google.com/search?hl=en&hs=A4Q&client=firefox-a&rls=org.mozilla:en-US:official&q=%22farting+preacher%22&spell=1
I can't believe I had not seen it before, perhaps someone else has missed it also, isn't it hilarious..Someone really did a lot of work on that