Dennis did she actually give you poor customer service (prior to her lapse of judgment)? If she was actually following company procedure I don't think your poor tip should have been directed towards her, perhaps speaking to a manger in this case would have been a better solution.
It doesn't make any difference. She made the statement of "policy" because she was a lazy biatch, and her chicago attitude prior to this incident justified the stiffing.
As you read, I'm a heavy tipper even for mediocre service, so you have to understand that the service was so poor the penny tip was warrented.
I don't regret it a bit, and after we told the bartender what had transpired, he agreed with our decision.
I suspect it wasn't her first "issue" with a customer after the bartender was in our corner.
My only regret in that situation was that I didn't go back upstairs and offer her the penny one more time.