Can you name this tune?

Question

First you get down on your knees,
Fiddle with your rosaries,
Bow your head with great respect,
And genuflect, genuflect, genuflect!

Do whatever steps you want, if
You have cleared them with the Pontiff.
Everybody say his own
Kyrie eleison,
Doin' the Vatican Rag.

Get in line in that processional,
Step into that small confessional,
There, the guy who's got religion'll
Tell you if your sin's original.
If it is, try playin' it safer,
Drink the wine and chew the wafer,
Two, four, six, eight,
Time to transubstantiate!

So get down upon your knees,
Fiddle with your rosaries,
Bow your head with great respect,
And genuflect, genuflect, genuflect!

Make a cross on your abdomen,
When in Rome do like a Roman,
Ave Maria,
Gee it's good to see ya,
Gettin' ecstatic an'
Sorta dramatic an'
Doin' the Vatican Rag!

Answer 1

It's the Vatican Rag by Tom Lehrer. He's popular in R&S today.

Namaste!

Answer 2

Vatican Rag by Tom Lehrer

Answer 3

Sounds like Mel Brooks.

Edit: According to the internets, I'm wrong.

Answer 4

Hooray liddabet!

You really don't get the full impact without the lively tune, though.