As sung by Bob Gibson and 2 others at Charlotte's Web (a coffeehouse in Rockford, Illinois in about 1973). Beautiful 3-part harmony to The Church's One Foundation.

Some dogs had a party; they came from near and far.
And some dogs came by taxi, and some dogs came by car.
And each signed his name all in a little book.
And each dog hung his ___hole upon a separate hook.

One dog was not invited, and this aroused his ire.
He stormed into the party and loudly shouted, "Fire!"
The dogs got so excited; they didn't stop to look,
But grabbed the nearest ___hole from off the nearest hook.

Now this is a very sad story, for it is awfully sore
To wear another's ___hole you've never worn before.
And this is why, when dogs meet, no matter where they roam,
They sniff each other's ___hole, in hopes it is their own.

It's an acapella hit amongst our friends to this day. Sometimes 4-part harmony. Beautiful.