On the theme of kindness ... the words you use when interacting with others either breathe life or death, bless or curse, lift and elevate or rip and strip.
Insults wrapped up in jokes are still insults. There's a fine line between being honest and being rude/obnoxious.
You can create an atmosphere of peace or conflict and love or hate all in the words you choose ... so filter your thoughts and choose your words wisely.