mea culpa 

Latin for my fault. Mea being my. Culpa being fault or cause, also the root word for culpability.

Ok, shut up Mea Culpa!
Also from "Fuitcakes" by Jimmy Buffet:
Mea Culpa Mea Culpa Mea Maxima Culpa

mea culpa by Evan January 20, 2005

Mea culpa canis 

Latin for my bad dog

Tim: Dude, you drink all the milk.
John: Mea culpa canis

Mea culpa canis by MercSoldier May 6, 2010

Meh Culpa 

A really half-assed apology.

(Meh Culpa is a portmanteau of contemporary slang and Latin. See Mea Culpa. ...or perhaps admittedly a cheap combo of street and pretentiousness.) Um, Meh Culpa?

(I just made this word up. Is that okay by UD guidelines? ...or is it like "original research" on Wikipedia?) If it's not okay, Meh Culpa. ;-)

You are totally right, I did make a spelling error in my IM message to you last night. Meh Culpa.

Meh Culpa by Slangard July 29, 2007

mea culpa 

Literally "my fault" in Latin.

Sunshine: Oh, I included the wrong phrase into the example sentence! Mea culpa.

mea culpa by gerg:D December 28, 2005

mea culpa 

A latin phrase meaning "my fault" used mainly by politicians where the action or behavior for which fault is admitted is indefensible and/or inexcusable; the phrase is employed in order to admit fault less bluntly and in a way that is not readily comprehended as such by the general population.

President Clinton eventually abandoned his efforts to explain away or defend his affair with Monica Lewinsky in the White House, and instead, Clinton's attorney issued his Client's "mea culpa" with respect to the affair.

mea culpa by BA from PA October 1, 2009

Media Culpa 

A televised public apology admitting one's fault. Based upon the Latin phrase "mea culpa", which basically means "my bad".

A media culpa is a popular activity for athletes and politicians. Famous media culpas: Bill Clinton, Tiger Woods, David Letterman, Eliot Spitzer, Kobe Bryant, Mel Gibson, Alex Rodriquez, Michael Phelps, Alec Baldwin, Hugh Grant, Michael Richards, Marion Jones, David Hasselhoff, Duane "Dog" Chapman, and on and on and on...

Did you catch Tiger Woods' media culpa this morning?

Oh yeah, I've already tweeted upon it thrice.

Media Culpa by King T February 20, 2010

Oprah Culpa

The act of acknowledging fault to and seeking absolution from Oprah for an indiscretion so offensive that forgiveness from any other deity will not suffice.

Fergie, the Duchess of York, will offer her Oprah Culpa on June 1, 2010.

Oprah Culpa by meanjavabean May 29, 2010