One from old Hebrew, and Yiddish where taken from a common greetings literal translation to "be well"
The other is coined from the movie "Demolition man" meant to sound like an evolution of slang that was meant to sound strange to contemporary viewers.
However the movie was a popular cult classic and the slang became commonly used in the following years, until the term became a common contemporary email signature in popular culture today.
Be well, be kind is quote said by the only half-filipino male lead of show “the 100”, Bob Morley. He’s the most talentedactor and the kindest, sweetest, cutest person in the world.
“ Btw thanks for the puppy pictures. Then you have these two... Enjoy.
Expression used in resentment as a reason for doing something deemed unethical when one knows one is going to be accused of doing that thing anyway, particularly when there is much to be gained by doing it.
They are going to accuse me of doing nothing and/or of working and drawing the dole at the same time, so I might as well be hung for a sheep as for a lamb.