that's one on me

That's a joke at my expense, as in And after all that discussion they didn't show up—that's one on me. This phrase must be distinguished from that's a new one on me, which means “this is the first time I've heard of or seen that” (as in A checkerboard rug—that's a new one on me). Both idioms can be used with other personal pronouns (for example, that's one on you) and date from the early 1900s.

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

I guess I'll own up that's one on me.

“Now, that’s one on me, Scotty—” “Oh, it was a bluff, and Fisty didn’t have the nerve to call it.”

That's one on me, all right, and you're welcome to laugh, but little Hal Harrison has learned his lesson.

"That's one on me," admitted the lieutenant, sheepishly.

"That's one on me," chuckled Davidson.

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