(something) is just what (one) needs
(something) is just what (one) needs
Said ironically to indicate that something is not wanted or needed at all. Great, more interns to train—that's just what I need! We're already struggling to keep up with everything our kids are doing, so a house full of relatives is just what we need right now.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.