Unfortunately (for those who hate them) but fortunately (for those who appreciate new words and phrases), some of these abominations will end up in the dickshunairy. Language is dynamic. New ways of expressing a thought are always popping up, and olde ones fade away. Some have longer lives than others. Use what you think is useful, and shun those you don't. And, of course, mercilessly correct those you think are abusing the language. You gotta!

"I could *NOT* care less." If "you *COULD* care less," than [whatever] may be not very important, but is still not of no concern at all.
and
"The sixty-four thousand dollar question!" (Look it up.) Geddit right, or don't use it!

BTW, Save the semicolon!

Saul