Did you mean mea culpa? It's a Latin phrase that means "through my fault" - an acknowledgment of a personal error or fault.
The phrase has a long history of use in English and was used by Chaucer in his Troylus as early as 1374:
"Now, mea culpa, lord! I me repente."
For links on the references of mea culpa in classic literature, go to www.thefreedictionary.com.
Learn Latin for free at SurfaceLanguages.com.
And here are 7 best apps for learning Latin, shared by Omniglot.com.