Yes, it is a phrase.
Dishing
to deal out criticism or abuse
Profiles of Nature - 1986 Badgers Dishing the Dirt was released on: USA: 23 April 2005
The Gym - 2005 Dishing Up and Moving Out 1-3 was released on: USA: 3 August 2005
Wide Angle - 2002 Dishing Democracy 6-5 was released on: USA: 31 July 2007
The phrase "not in your bailiwick" means something is not within your area of responsibility or expertise. It suggests that it is outside of your jurisdiction or control.
The phrase "leave it up to" means to entrust a decision or action to someone else, indicating that they have the authority or responsibility to handle it.
Carter Can - 2007 Dishing Up a Divine Dining Room 5-1 was released on: USA: 5 September 2009
Social Responsibility
My neighbor was dishing out compliments about everyone's costume.
Rachael Ray - 2006 'Dishing' with Kristen Bell 2-139 was released on: USA: 18 April 2008 USA: 18 April 2008
The phrase 'mea culpa' means 'my mistake' or 'my fault'. It is a Latin phrase that is now used in everyday talk. It is essentially used as an admission of guilt.