When you have shown total disapproval to a person about their decision, they still go ahead with it and even still have the audacity to get help from you to accomplish it!!!
A child at a store started whining about wanting a toy which grew into a full fledged tandrum and the mother was calmly ignoring the screams. The child's cries were tugging at my heart. But had I been in that mom's shoes, my expression of 'ellum kollum' exploding would be hard to hide!