Those who know well stress that; "A word once let out of the cage cannot be whistled back again." Which is true and based on fact. Some people spend most of their precious and unredeemable time to dish out words aimed on undermine and criticise others mostly without proper reasons, but in the name of jealousy.
The background and setting should be taken into consideration before opening the mouth, for the reason that, immediately the mouth is wide opened, is the same time flies start to pop up.
There’s a lot of friendships and relationships chilling inside the history bins now due to the wrong choice of words during charming conversations and debates.
Never try to undermine or criticise someone until you understand what their situation is like or what he/she has been through in life. Remember, an individual has more than one side, but you are not ashamed to undermine and criticise by only seeing one side of him/her.