no matter how you slice it - Phrases/Idioms
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Regardless of how one views something, as in No matter how you slice it, he's still guilty of perjury. This expression uses slice in the sense of “cut apart.” [Colloquial; first half of 1900s]