If the remark is demeaning, critical, negative, self-serving, or otherwise unproductive, they will hold the remark and formulate something different to say. Don't say anything unproductive unless that is consistent with your overall motive. And if you find that your motives are negative, it's probably time to take a time-out and reassess the situation. The mark of a winning communicator is that they will skip the quick retort and give a productive response instead. Be consistently honest.
People have a sixth sense about the character of others.
Winners always walk their talk. Any inconsistency between what you say and what you do will be spotted and will become a measure of who you are. Others will have a difficult time talking and listening to you if there are questions about your honesty. The words of liars fall on deaf ears. If you make a mistake or there are misunderstandings, make corrections and clarifications promptly.