Woof.

BLACK SABBATH: Guess What's Up for Bids?

One enterprising Black Sabbath fan is so upset at the rift between drummer Bill Ward and the rest of the band that he's started an eBay auction for the "Integrity of Black Sabbath" -- in the form of a plastic dog turd.

The seller writes, "As a fan of the original Sabbath for over 30 years, I find that the way that they are trying to rip off both Bill Ward and the hundreds of thousands of loyal fans across the planet is unacceptable and appalling." He says the money from the winning bid will go to the U.K. charity Help the Aged.

As of Wednesday evening, Sabbath's integrity is worth 65 bucks. The auction ends on Monday.