that's a new one(redirected from a new one)
that's a new one
That is something I haven't heard before. Usually in reference to an unusual excuse or explanation, often said sarcastically or ironically. She said she couldn't turn in her assignment because her parakeet flew off with it out the window? Well, that's a new one. That's a new one—I've never heard of someone asking not to be paid for their overtime work before.
see under that's one on me.