It means goodbye in earthy folk speech, it's a old style common word for the common working man/woman
Thanks for the goodies and stuff, fare thee well my friend!
Where you do a shit so massive, you have to push it round the U bend in the toilet by hand.
My boy did a shit so massive he had to give it the reverse wishing well,
Coolest nigga ever, if dapper was a person(he gives the best handshakes)
Person1: BRIAN WELLS IS THE COOLEST NIGGA EVER!!!
Person2: fax
a school full of whores and wannabe road man, boys that think there on shit, girls that wear to much fake tan and are complete slags, teachers that need to go back to “school” there selfs and slt need to get alot better cause they cant catch me! everyones on thc and its a crack school, do not come
welling school it sucks ass you dont wanna go ( miss davies slays though)
be fortunate to be no longer involved in (a situation).
Here's a sentence using "be well out of":
Sarah dodged the traffic jam completely by taking a side street. "Wow, you're well out of that mess," said John, stuck bumper-to-bumper.
an negative and anti-social habit one has recently acquired.
mother: Joseph, stop interrupting. I don't like that the medicine you digest so well lately. This anti-social habit won't get you anywhere in life. And Joseph, also please improve your vocabulary. I didn't raise you to such a rotten apple
Joseph: go scratch yourself.