no skin off one's nose

This saying has been attributed to originating in boxing as a minor blow taking no skin off. See: The American Heritage Dictionary Of Idioms, Second Edition Paperback – February 26, 2013 by Christine Ammer and Random House Dictionary of America's Popular Proverbs and Sayings: Second Edition Paperback – April 18, 2000 by Gregory Titelman.

• "You can be as critical of them as you like. It's no skin off my nose."
• "There was no skin off our nose; however the LAC [local area commander] had different ideas."

• no skin off one's back
• no skin off one's teeth