Do you agree or disagree with Mr. Pink's attitude on tipping?

I tip 15% for good service, 10%-0% for bad service (especially surly. If I ask for one thing and I get a pissy face or a sigh, tip is kaput). 20% for exceptional service. No more that 20%, a waitress wants more, she's going to have to dance naked on my table and detail my car. And I tip 10% for take out. It goes to kitchen staff.