Anus Burgers?

Rule 1 in the world of fast-food-Hamburger-chain marketing:

If you run televsion ads implying that another chain's hamburgers are, in fact, Anus burgers, you will probably be sued.

"The parent company of the Carl's Jr. and Hardee's fast food chains sued rival Jack In The Box Inc. on Friday to stop TV ads that it says suggest Carl's Jr. and Hardee's use cow anus to make Angus beef hamburgers."

Anus or Angus?