Mr Lai Ying Pun gave us another good lecture:
...Your goal is not to offend but to get what you want. You can hardly get what you want if you offend others and you are just (((((stupid if you offend needlessly))))).
...You need not raise your voice, which only shows anger or emotional disturbance. If you are (((((not calm, you are just showing your weakness.)))))
...The record of failure can serve as your ammunition. If you are not needlessly provocative, sooner or later you will get what you want. But you have to be reasonable. (((((If the truth is on your side, you need not be afraid. )))))If in doubt, find it out.
*** another way is, 嗲。