1)To spell "baddest" incorrectly, which is ALSO not a word.
2)To misspell a non-existing word.
"Woah, Jimmy! You almost got perfect on that spelling test! Which word did you misspell?"
"Baddest, Greg. Baddest."
literal translation: shit (opposite of da best)
commonly misread as "baddest" by the illiterate & intellectually incapable, when it is in fact, pronounced buh-dest
some awesome norcal person: west coast, best coast
some southern hick: west coast, badest coast