1. Do not tease people nor pick on their faults. Similarly, if people have weaknesses in them, then do not imitate them in jest. This has been prohibited in the Ahaadith.
يَا أَيُّهَا الَّذِينَ آمَنُوا لَا يَسْخَرْ قَوْمٌ مِّن قَوْمٍ عَسَىٰ أَن يَكُونُوا خَيْرًا مِّنْهُمْ وَلَا نِسَاءٌ مِّن نِّسَاءٍ عَسَىٰ أَن يَكُنَّ خَيْرًا مِّنْهُنَّ وَلَا تَلْمِزُوا أَنفُسَكُمْ وَلَا تَنَابَزُوا بِالْأَلْقَابِ
O you who believe! No people (men) should ridicule other people (men), perhaps the latter are better than the former. Nor should women ridicule other women, perhaps the latter are better than the former. And do not pick the faults of one another, nor call one another with nicknames (which they would not like).