Don't Know, Don't Care

Response to a question that has nothing to do with the story you are telling at the time the question is asked.

John: I can't believe that Dave caught his girlfriend with his roommate.

Mike: did she ever get hired by that high tech company??
John: don't know, don't care. Dave is going to have to dump her sneaky ass.

By Isis

Define Don't Know, Don't Care Meaning