To use the original word of bad, which normally means not
good into a word that translates into everything that's
good.
of
good quality; having the qualities required for a particular role.
Something that is good is bad.
"That actress is so bad(good) she makes every other
girl envious"
When you and your
friend are playing basketball and your
friend makes a great play. You might say,"man that play was bad(good)".